{"title":"Modulators","description":null,"products":[{"product_id":"modulator-c4-ford-1975-025521","title":"Modulator C4 Pushin Sad Green 75+","description":"\u003ch2\u003eModulator C4 Pushin Sad Green 75+ for Ford Automatic Transmissions\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control in your Ford C4 automatic transmission with this premium modulator from Alto Products. Engineered as a direct-fit replacement, this push-in style modulator with the distinctive green stripe and \"Sad\" configuration delivers reliable vacuum modulation for smooth, consistent gear changes.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePush-in style modulator with green identification stripe for easy verification\u003c\/li\u003e\n\u003cli\u003ePrecision-manufactured by Alto Products, a trusted name in transmission components\u003c\/li\u003e\n\u003cli\u003eDesigned for Ford C4 automatic transmissions from 1975 and newer\u003c\/li\u003e\n\u003cli\u003eRestores correct vacuum-controlled shift points and line pressure\u003c\/li\u003e\n\u003cli\u003eDurable construction for long-lasting performance in daily driving and light-duty applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Ford vehicles equipped with the C4 automatic transmission from 1975 and newer. Please verify your transmission type and modulator style before ordering to ensure proper fitment.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhen your C4 transmission begins shifting late, harshly, or erratically, a faulty modulator is often the culprit. This Alto Products replacement offers an economical solution without compromising quality, helping you get your vehicle shifting properly again. Order today and get your Ford C4 back on the road with confidence.\u003c\/p\u003e","brand":"ALTO PRODUCTS","offers":[{"title":"Default Title","offer_id":49484799443203,"sku":"025521","price":35.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/025521_01.png?v=1792190251"},{"product_id":"modulator-opel-1969-038500","title":"Modulator Opel Trimatic Th180c 69-81","description":"\u003ch2\u003eModulator for Opel Trimatic TH180C Automatic Transmission 1969-1981\u003c\/h2\u003e\u003cp\u003eThe Alto Products 038500 Modulator is a direct-fit replacement for the Opel Trimatic TH180C automatic transmission, engineered to restore proper shift timing and line pressure control. Manufactured by Alto Products, this modulator delivers reliable vacuum-to-throttle modulation for smooth, consistent gear changes. It is the ideal solution for rebuilders and repair shops servicing 1969-1981 Opel and compatible vehicles.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufactured by Alto Products for dependable quality and fitment\u003c\/li\u003e\n\u003cli\u003eRestores correct shift points and line pressure modulation\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the Opel Trimatic TH180C automatic transmission\u003c\/li\u003e\n\u003cli\u003eDurable construction for long service life in daily-driven and restored vehicles\u003c\/li\u003e\n\u003cli\u003eDirect replacement for worn or failed modulators causing harsh or delayed shifts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Opel Trimatic TH180C automatic transmissions used in various vehicles from 1969 through 1981. It fits applications across multiple compatible brands that utilized the TH180C transmission during this period. Please verify your transmission model and year before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eTrust Alto Products for a modulator that restores smooth, reliable shifting in your Opel Trimatic TH180C. Whether you are completing a transmission rebuild or repairing a daily driver, this part offers the quality and fitment you need. Order now and get your vehicle shifting like it should.\u003c\/p\u003e","brand":"ALTO PRODUCTS","offers":[{"title":"Default Title","offer_id":49484803637507,"sku":"038500","price":40.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/038500_01.png?v=1792190283"},{"product_id":"modulator-opel-038500b","title":"Modulator Opel Th180 Trimatic Green","description":"\u003ch2\u003eModulator for Opel TH180 Trimatic Automatic Transmission by Alto Products\u003c\/h2\u003e\u003cp\u003eThe Alto Products 038500B Modulator is a direct-fit replacement component engineered for the Opel TH180 Trimatic automatic transmission. This green modulator restores proper shift timing and line pressure control, helping your transmission operate smoothly under all driving conditions. Manufactured by Alto Products, a trusted name in transmission components, this modulator delivers reliable performance and precise fitment.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit replacement for Opel TH180 Trimatic automatic transmissions\u003c\/li\u003e\n\u003cli\u003eGreen color-coded design for easy identification and correct application\u003c\/li\u003e\n\u003cli\u003eRestores proper vacuum modulation for smooth, consistent shifts\u003c\/li\u003e\n\u003cli\u003eManufactured by Alto Products to strict quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for transmission rebuilds, repairs, and routine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Opel TH180 Trimatic automatic transmissions across various vehicle models. Please verify your transmission type and existing modulator color code before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhen your Opel TH180 Trimatic transmission begins shifting harshly or slipping, a faulty modulator is often the culprit. The Alto Products 038500B Modulator offers an affordable, high-quality solution that restores drivability without the cost of a full transmission replacement. Order yours today and get your vehicle shifting smoothly again.\u003c\/p\u003e","brand":"ALTO PRODUCTS","offers":[{"title":"Default Title","offer_id":49484803899651,"sku":"038500B","price":32.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/038500B_01.png?v=1792190284"},{"product_id":"modulator-at540-1977-055502","title":"Modulator Allison AT540 \/  542 \/  543 \/  545 \/  1545 77-80 \/  90-94","description":"\u003ch2\u003eModulator for Allison AT540, AT542, AT543, AT545, and AT1545 Transmissions (1977-1980, 1990-1994)\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control with this direct-fit modulator designed for Allison AT540 series automatic transmissions. Manufactured by Alto Products, this modulator is engineered to meet or exceed OEM specifications for reliable performance in medium-duty and heavy-duty applications. It is a practical replacement for worn or failed modulators that cause harsh or delayed shifts.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit replacement for Allison AT540, AT542, AT543, AT545, and AT1545 transmissions\u003c\/li\u003e\n\u003cli\u003eManufactured by Alto Products, a trusted name in transmission components\u003c\/li\u003e\n\u003cli\u003eHelps maintain correct line pressure for smooth, consistent shifting\u003c\/li\u003e\n\u003cli\u003eDurable construction designed for long service life in demanding conditions\u003c\/li\u003e\n\u003cli\u003eIdeal for rebuilds, repairs, and preventive maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Allison AT540, AT542, AT543, AT545, and AT1545 transmissions for model years 1977-1980 and 1990-1994. It fits a variety of vehicle brands that use these Allison transmissions. Please verify your transmission model and year before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhen you need a dependable modulator for your Allison transmission, this Alto Products unit offers the quality and fit you expect. Don't let a faulty modulator compromise your vehicle's performance. Order now and get fast shipping from Florida.\u003c\/p\u003e","brand":"ALTO PRODUCTS","offers":[{"title":"Default Title","offer_id":49484811010307,"sku":"055502","price":44.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/055502_01.png?v=1792190337"},{"product_id":"modulator-a4ld-51-0301-22-00","title":"Modulator Vacuum A4LD Adjustable (oem# E5tz-7a377-b) (ind# 56160e)","description":"\u003ch2\u003eModulator Vacuum A4LD Adjustable | Various Vehicles | Atk\u003c\/h2\u003e\u003cp\u003eThe Modulator Vacuum A4LD Adjustable (OEM# E5TZ-7A377-B, IND# 56160E) is a direct-fit replacement vacuum modulator designed for the Ford A4LD automatic transmission. Manufactured by Atk, this adjustable modulator allows you to fine-tune shift timing and pressure for smooth, reliable performance.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdjustable design for precise shift point tuning\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM# E5TZ-7A377-B and IND# 56160E\u003c\/li\u003e\n\u003cli\u003eManufactured by Atk to strict quality standards\u003c\/li\u003e\n\u003cli\u003eRestores proper vacuum modulation and shift feel\u003c\/li\u003e\n\u003cli\u003eIdeal for stock rebuilds and performance applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis vacuum modulator is compatible with the Ford A4LD automatic transmission. It fits various vehicles equipped with the A4LD transmission. Please verify your OEM part number E5TZ-7A377-B or IND# 56160E before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eAtk's adjustable vacuum modulator offers a cost-effective solution for restoring proper transmission shifting. Whether you're rebuilding an A4LD or chasing the perfect shift feel, this modulator delivers. Order now and get fast shipping from Florida.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484849119491,"sku":"51-0301-22-00","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/51-0301-22-00_01.png?v=1792190676"},{"product_id":"modulator-c4-ford-26833x","title":"Modulator \/  C-4 (off Shore)","description":"\u003ch2\u003eModulator for Ford C-4 Transmission | ATK\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control in your Ford C-4 automatic transmission with this replacement modulator from ATK. This off-shore manufactured unit is designed to fit C-4 applications, delivering reliable vacuum-controlled modulation for smooth, consistent gear changes. Whether you are rebuilding a classic Ford or servicing a daily driver, this modulator offers a practical solution at an affordable price point.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement modulator for Ford C-4 automatic transmissions\u003c\/li\u003e\n\u003cli\u003eVacuum-operated design for proper shift feel and pressure regulation\u003c\/li\u003e\n\u003cli\u003eOff-shore manufactured to meet ATK quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for transmission rebuilds, repairs, and routine maintenance\u003c\/li\u003e\n\u003cli\u003eEngineered to restore smooth, predictable shift timing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Ford vehicles equipped with the C-4 automatic transmission. Please verify your transmission model and modulator style before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eATK provides dependable transmission components trusted by rebuilders and DIY enthusiasts alike. If your C-4 is shifting late, harsh, or erratically, a faulty modulator is a common culprit. Replace it with this ATK modulator and get your Ford back on the road with confidence. Order today and enjoy fast shipping from Florida.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484852625667,"sku":"26833X","price":25.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/26833X_01.png?v=1792190729"},{"product_id":"modulator-c-6-36830d","title":"Modulator \/  C-6 (off Shore)","description":"\u003ch2\u003eModulator for C-6 Transmission | Compatible with Various Brands | Atk\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control with this replacement modulator for C-6 automatic transmissions. Manufactured by Atk, this off-shore modulator is a direct-fit solution for worn or failed units. It helps deliver smooth, consistent shifts and reliable vacuum modulation for everyday driving and towing.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for C-6 transmission modulator applications\u003c\/li\u003e\n\u003cli\u003eManufactured by Atk for dependable fit and function\u003c\/li\u003e\n\u003cli\u003eOff-shore production with quality-controlled tolerances\u003c\/li\u003e\n\u003cli\u003eHelps restore correct shift points and line pressure\u003c\/li\u003e\n\u003cli\u003eIdeal for rebuilds, repairs, and routine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with C-6 transmissions across various vehicle brands. Please verify your transmission model and existing modulator style before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhen your C-6 isn't shifting like it should, a fresh modulator from Atk can make a noticeable difference. Built to match original fit and function, it's a smart choice for keeping your transmission healthy. Order now and get back on the road with confidence.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484870254851,"sku":"36830D","price":30.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/36830D_01.png?v=1792190888"},{"product_id":"modulator-th-440-84820x","title":"Modulator \/  TH-440 (off Shore)","description":"\u003ch2\u003eModulator for TH-440 Transmission | Various Brands | Atk\u003c\/h2\u003e\u003cp\u003eRestore proper shift quality and line pressure control with this replacement modulator for the TH-440 transmission. Manufactured by Atk, this modulator is engineered to meet or exceed original equipment specifications for fit and function. It is an ideal solution for rebuilders, repair shops, and do-it-yourselfers seeking a reliable replacement for a worn or failed unit.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for TH-440 transmission applications\u003c\/li\u003e\n\u003cli\u003eManufactured by Atk to strict quality control standards\u003c\/li\u003e\n\u003cli\u003eRestores correct vacuum modulation and shift feel\u003c\/li\u003e\n\u003cli\u003eDurable construction for long service life\u003c\/li\u003e\n\u003cli\u003eEasy installation with no modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with TH-440 transmissions used across various vehicle brands. Please verify your transmission model and existing modulator style before ordering to ensure correct fitment.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhen your TH-440 transmission needs a dependable modulator, this Atk-manufactured replacement delivers the performance and reliability you expect. Don't let a faulty modulator compromise your transmission's operation. Order now and get back on the road with confidence.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484909510915,"sku":"84820X","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/84820X_01.png?v=1792191282"},{"product_id":"modulator-c4-ford-k023522","title":"Modulator \/  Fmx\/c-4 \/  Adj Green(threaded)","description":"\u003ch2\u003eModulator for Ford C-4 Transmission | Adjustable Green Threaded\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control in your Ford C-4 automatic transmission with this adjustable green threaded modulator from ATK. Engineered as a direct-fit replacement, this modulator helps eliminate harsh or delayed shifts caused by a worn or failed factory unit. The threaded adjustment feature allows fine-tuning of shift firmness to suit your driving preferences or performance needs.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdjustable green threaded design for customizable shift feel\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement for the Ford C-4 transmission modulator\u003c\/li\u003e\n\u003cli\u003eManufactured by ATK to meet or exceed OEM specifications\u003c\/li\u003e\n\u003cli\u003eHelps restore proper line pressure and shift timing\u003c\/li\u003e\n\u003cli\u003eDurable construction for long-lasting performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Ford vehicles equipped with the C-4 automatic transmission. Please verify your transmission model and existing modulator style before ordering to ensure proper fitment.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eATK is a trusted name in transmission components, and this adjustable modulator delivers reliable performance at a competitive price. Whether you are repairing a daily driver or building a project car, this part provides the adjustability and durability you need. Order now and get your Ford C-4 shifting smoothly again.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484924911875,"sku":"K023522","price":39.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/K023522_01.png?v=1792191469"},{"product_id":"modulator-c4-ford-k025522","title":"Modulator C4\/C5 Adj Green","description":"\u003ch2\u003eModulator C4\/C5 Adjustable Green — Ford Automatic Transmission\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control with this adjustable green modulator for C4 and C5 automatic transmissions. Manufactured by Atk, this direct-fit replacement modulator is engineered to meet or exceed OEM specifications for reliable, consistent performance. Whether you are rebuilding a transmission or chasing down a harsh or late shift complaint, this modulator delivers dependable vacuum-controlled modulation.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdjustable design allows fine-tuning of shift firmness and timing\u003c\/li\u003e\n\u003cli\u003eGreen identification for correct C4\/C5 application fitment\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the original vacuum modulator\u003c\/li\u003e\n\u003cli\u003eManufactured by Atk to strict quality control standards\u003c\/li\u003e\n\u003cli\u003eDurable construction resists heat, pressure, and fluid exposure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Ford vehicles equipped with C4 and C5 automatic transmissions. It is a direct-fit replacement for the factory modulator and requires no modification for installation. Please verify your transmission model and existing modulator style before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eAn adjustable modulator gives you control over shift quality, making it a smart choice for both stock rebuilds and performance applications. Backed by Atk manufacturing, this C4\/C5 modulator is a cost-effective way to eliminate vacuum-related shift problems and restore crisp, predictable gear changes. Order today and get your Ford transmission shifting right again.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484924944643,"sku":"K025522","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/K025522_01.png?v=1792191469"},{"product_id":"modulator-opel-1969-k038500","title":"Modulator Opel Trimatic Th180c 69-81","description":"\u003ch2\u003eModulator for Opel Trimatic TH180C Automatic Transmission 1969-1981\u003c\/h2\u003e\u003cp\u003eThe ATK Modulator (SKU K038500) is a direct-fit replacement for the Opel Trimatic TH180C automatic transmission, covering model years 1969 through 1981. This modulator restores proper shift timing and line pressure control, eliminating harsh or delayed gear changes caused by a worn or failed original unit. Engineered by ATK, it delivers reliable, consistent performance for your classic Opel or compatible vehicle.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for the Opel Trimatic TH180C automatic transmission\u003c\/li\u003e\n\u003cli\u003eRestores correct shift timing and smooth gear engagement\u003c\/li\u003e\n\u003cli\u003ePrecision-built by ATK for dependable, long-lasting performance\u003c\/li\u003e\n\u003cli\u003eHelps prevent harsh shifting and transmission pressure loss\u003c\/li\u003e\n\u003cli\u003eIdeal for restoration and repair of 1969-1981 vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Opel Trimatic TH180C automatic transmissions from 1969 to 1981. It fits various compatible vehicle brands using the TH180C transmission. Please verify your transmission model and year before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhen your classic Opel's transmission starts shifting poorly, a quality modulator is the fix you need. This ATK-built unit offers factory-style fit and function at a fraction of the cost of a full rebuild. Restore smooth, reliable shifting today—order now and get your vehicle back on the road.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49484925010179,"sku":"K038500","price":40.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/K038500_01.png?v=1792191470"},{"product_id":"modulator-chevrolet-1969-35820s","title":"Modulator Gm Adj \/  (th 350 Medium) (69-86) (aftermarket)","description":"\u003ch2\u003eModulator for GM TH350 Automatic Transmission (1969-1986) | Chevrolet\/GM\u003c\/h2\u003e\u003cp\u003eRestore proper shift timing and line pressure control in your GM TH350 automatic transmission with this adjustable modulator. Manufactured by Atk, this aftermarket replacement fits Chevrolet and GM vehicles equipped with the TH350 medium-duty transmission from 1969 through 1986. A faulty modulator can cause harsh or delayed shifts, so replacing it with a quality unit keeps your transmission performing the way it should.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdjustable design allows fine-tuning of shift points and firmness\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement for the GM TH350 medium-duty automatic transmission\u003c\/li\u003e\n\u003cli\u003eEngineered to maintain correct vacuum-to-line pressure modulation\u003c\/li\u003e\n\u003cli\u003eDurable construction built to withstand heat and continuous cycling\u003c\/li\u003e\n\u003cli\u003eAftermarket part manufactured by Atk for dependable, cost-effective repair\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis modulator is compatible with Chevrolet and Chevrolet\/GM vehicles running the TH350 medium-duty automatic transmission from 1969 to 1986. Please verify your transmission model and year before ordering.\u003c\/p\u003e\u003ch3\u003eWhy Choose This Part?\u003c\/h3\u003e\u003cp\u003eWhether you are servicing a classic muscle car or a work truck, a properly functioning modulator is essential for smooth, predictable shifting. This adjustable Atk modulator offers a reliable fix at a fraction of the cost of OEM components. Check your application and order today to get your TH350 shifting right again.\u003c\/p\u003e","brand":"ATK","offers":[{"title":"Default Title","offer_id":49485211173123,"sku":"35820S","price":30.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0833\/0333\/4147\/files\/35820S_01.png?v=1792193532"}],"url":"https:\/\/shop.atkits.com\/collections\/modulators.oembed","provider":"ATK and parts, LLC","version":"1.0","type":"link"}