Sonnax Transmission Company Parts and Accessories

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: Monday 4/27/2026 if shipped by air

Automatic Transmission Case Bushing, Thrust Bearing, Two 0.010 in. Shims, Two 0.015 in. Shims, GM, 4L80E, 4L85E, TH400, Kit

Part Number: SOX-34006-SPB

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Automatic Transmission Rebuild Component, Pressure Regulator Valve, 4L80E, 4L85E, Each

Part Number: SOX-34200-14K

4.89 out of 5 stars ( 18 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Flange Yoke, Aluminum, Spicer 1350, 4.250 in. Flange Yoke Bolt Circle, Each

Part Number: SOX-T3-2-1579A

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Automatic Transmission Band, Kevlar®, GM, 4L60, 4L60E, 4L65E, 4L70E, 700R4, Each

Part Number: SOX-77700-01K

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Automatic Transmission Rebuild Components, Pressure Switch Rebuild Kit, GM, 6L45, 6L50, 6L80, 6L90, 6T70, 6T75, Kit

Part Number: SOX-124740-70K

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Pressure Booster, Line Pressure, Electric, Kit

Part Number: SOX-RFE-LB1

4.43 out of 5 stars ( 14 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Servo Piston, 2nd Gear Type, Billet Aluminum, Piston D-rings, Housing, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77701-04K

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Support, Output Shaft, Aluminum, Powerglide, Each

Part Number: SOX-28080K

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

LOW/REVERSE SERVO PISTON

Part Number: SOX-34914-02

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Clutch Backing Plate, 4L80-E, 4L85-E, Kit

Part Number: SOX-34144HD-02

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Heavy Duty Intermediate Clutch Outer Sprag Race

Part Number: SOX-34663HD-02

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Clutch Backing Plate, THM400, 4L80-E, Kit

Part Number: SOX-34144HD-01

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Automatic Transmission Rebuild Components, Bearing Kit, 2007 and Later, 65RFE, 66RFE, 68RFE, Kit

Part Number: SOX-SBK-C18

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

YOKE FLANGE

Part Number: SOX-T3-2-1859A

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Stator Support Shaft, GM, Powerglide, Each

Part Number: SOX-28154S

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Throttle Cable Bracket, Steel, Fits Holley Carburetors, Each

Part Number: SOX-AS6-01

4.22 out of 5 stars ( 9 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

SEPARATOR PLATE

Part Number: SOX-35740-048

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Automatic Transmission Rebuild Components, Forward Clutch Hub Washer, Front, Steel, GM, 4L80E, 4L85E, TH400, TH425, Set of 5

Part Number: SOX-34298-078

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Yokes, Weld-On Style, Aluminum, for 1350 U-Joint, 3.5 in. Diameter Tube, 0.125 in. Wall, with Bearing Caps, CL to Weld of 2.5 in. Long, Each

Part Number: SOX-T35-28-3512L

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Low/Reverse Servo Piston, Heavy Duty, Billet Aluminum, GM, TH400, 4L80E, Each

Part Number: SOX-34914-01

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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

Part Number: SOX-28821-08K

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Servo Apply Lever, Automatic Transmission Rebuild Component, C-6, Each

Part Number: SOX-36916E

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Automatic Transmission Rebuild Component, Accumulator Sleeve, TH350, TH350C, Kit

Part Number: SOX-3571901K

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

Small Parts Kit, Powerglide, Seals, Retainers, Bushing, Plates, Spring, Kit

Part Number: SOX-28755-SPK

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air