Sonnax Transmission Parts

Since 1978, Sonnax Transmission Company has specialized in the cutting-edge design of top-quality performance and OEM replacement transmission parts. Summit Racing carries...

Since 1978, Sonnax Transmission Company has specialized in the cutting-edge design of top-quality performance and OEM replacement transmission parts. Summit Racing carries a large selection of Sonnax transmission and drivetrain parts, including slip yokes, throttle cable brackets, input drum reinforcement kits, hydraulic line pressure booster kits, and more. Order your Sonnax transmission parts from Summit Racing today!

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Results 1 - 25 of 89

Sonnax Zip Kits 6L45-6L90-ZIP

Shift Kit, Zip Kit, Chevy, Kit

Part Number: SOX-6L45-6L90ZIP

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Sonnax Shift Improver Performance Packs HP-4L60E-01

Shift Improver Performance Pack, 4L60E, 4L65E, 4L70E, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: SOX-HP-4L60E-01

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Shift Improver Performance Packs HP-4L80E-01

Automatic Transmission Valve Body, GM 4L80-E, 4L85-E, Performance, Each

Part Number: SOX-HP-4L80E-01

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits 8L45-8L90-TCC-ZIP

Automatic Transmission Shift Kits, TCC Zip Kit, with O-Ring End Plugs, Converter Limit Valve, Regulator/Shuttle, Cadillac, Chevy, GMC, 8L45, 8L90, Kit

Part Number: SOX-8L458L90TCCZ

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits 6R140-ZIP

Automatic Transmission Shift Kits, Zip Kit, with Boost Valve, O-Ring Plugs, Accumulator Pistons, Spring, Sleeves, Ford, 6R140, Kit

Part Number: SOX-6R140-ZIP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits ZF6-6R60-ZIP

Shift Kit, Zip Kit, BMW, Ford, Infiniti, Lexus, Volkswagen, Volvo, Kit

Part Number: SOX-ZF6-6R60-ZIP

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits A750E-A761E-ZIP

Automatic Transmission Shift Kits, Zip Kit, with End Plugs, O-Rings, Solenoid Modulator, Boost/Accumulator/Lockup Control Valves, Lexus, Toyota, Kit

Part Number: SOX-S0001

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits ZF8-ZIP

ZIP KIT

Part Number: SOX-ZF8-ZIP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits E4OD-4R100-ZIP

Automatic Transmission Shift Kits, Shift Improver, E4OD, 4R100, Sold as a Kit

Part Number: SOX-E4OD4R100ZIP

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits 6R80L-6R100-ZIP

Shift Kit, Zip Kit, 6R80, 6R100, Kit

Part Number: SOX-6R80L6R100ZI

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits ZF6-GEN2-ZIP

Shift Kit, Zip Kit, ZF6HP-21, ZF6HP-28, ZF6HP-34, Kit

Part Number: SOX-ZF6-GEN2-ZIP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Zip Kits AODE-4R75E-ZIP

ZIPPER KIT

Part Number: SOX-AODE4R75EZIP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Shift Improver Performance Packs HP-4R100-01

Shift Improver Performance Pack, 4R100, Ford, Kit

Part Number: SOX-HP-4R100-01

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Sonnax Zip Kits ZF6-053-ZIP

Shift Kit, Zip Kit, ZF6HP-19. ZF6HP-26, ZF6HP-32, Kit

Part Number: SOX-ZF6-053-ZIP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Zip Kits 46-47RHE-ZIP

SURE CURE KIT

Part Number: SOX-46-47RHE-ZIP

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Transmission Company Automatic Transmission Shift Kits 6T70-ZIP

ZIP KIT

Part Number: SOX-6T70-ZIP

Not Yet Reviewed

Estimated Ship Date: Dec 9, 2025 if ordered today

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Estimated Ship Date: Dec 9, 2025 if ordered today

Sonnax Transmission Company Automatic Transmission Shift Kits SC-AODE

THE SURE CURE KIT

Part Number: SOX-SC-AODE

Not Yet Reviewed

Estimated Ship Date: Dec 9, 2025 if ordered today

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Estimated Ship Date: Dec 9, 2025 if ordered today

Sonnax Transmission Company Automatic Transmission Shift Kits SC-46-47RHE-OS

SURE CURE KIT

Part Number: SOX-SC46-47RHEOS

Not Yet Reviewed

Estimated Ship Date: Dec 9, 2025 if ordered today

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Estimated Ship Date: Dec 9, 2025 if ordered today

Sonnax Sure Cure® Automatic Transmission Rebuild Kits SC-4L60E

Automatic Transmission Rebuild Set, with TV Cable Corrector Kit, Checkballs, etc., GM 4L60-E, Buick, Cadillac, Chevy, Oldsmobile, Pontiac, Kit

Part Number: SOX-SC-4L60E

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Sure Cure® Automatic Transmission Rebuild Kits SC-4L60

Automatic Transmission Rebuild Kit, GM 700R4, 4L60, Kit

Part Number: SOX-SC4L60

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Sure Cure® Automatic Transmission Rebuild Kits SC-4L80E

Automatic Transmission Rebuild Kits, Sure Cure Kit, with O-Ring Plug Ends, Boost Valve, Bushings, Springs, Cadillac, Chevy, GMC, 4L80-E, 4L85-E, Kit

Part Number: SOX-SC4L80E

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Sonnax Servo Piston Kits 28821-10K

Billet Servo, Low Gear, Billet Aluminum, Powerglide, Kit

Part Number: SOX-28821-10K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Super-Hold Servo Kits 77911-03K

Servo, Super-Hold, 2nd Gear, Billet Aluminum, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77911-03K

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Super-Hold Servo Kits 77767K

Servo, Super-Hold, 4th Gear, Billet Aluminum, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77767K

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

Sonnax Servo Piston Kits 28821-20K

Billet Servo, Low Gear, Billet Aluminum, Powerglide, Kit

Part Number: SOX-28821-20K

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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