Pumps & Pump Parts

4L80E Pump Assembly (1991-1996) 2-Cooler Fittings Behind Bell Style

Part number: R34500EFits: 4L80E · 1991-1996 A rebuilt, early-style 4L80E transmission pump assembly, built 1991-1996, with two cooler fittings located behind the bell housing. It is the...

4L80E Rebuilt Pump Assembly (1997-2003) 1-Cooler Fitting Behind Bell

A rebuilt pump assembly for GM 4L80-E automatic transmissions built 1997 to 2003, including the 4L80-E-HD/MN8 variant (2002) and the 4L85-E (2002 to 2003). It uses the style with one cooler fitting...

4L80E Pump Assembly w/ 1-Cooler Fitting New Design Case (2004-UP)

Part number: R34500EBFits: 4L80E · 2004-up A ready-to-install, rebuilt 4L80E transmission pump assembly, built for the 2004-UP case style. It is the one-cooler-fitting, new-design-case version of the...

4L80E Oversized TCC Regulator Valve Kit | Sonnax

Sonnax part number: 34994-18K Tooling Requ

4L80E Oversized Accumulator Control Valve Kit | Sonnax

Sonnax part number: 34994-22K Tooling Requ

4L80E Actuator Feed Limit Valve Kit | Sonnax

Sonnax part number: 34200-16KFits: 4L80-E, 4L85-E Tooling:77754-TL The actuator feed limit (AFL) valve in GM 4L80-E and 4L85-E units has a l

4L80E O-Ringed End Plug Kit | Sonnax | .497''

Sonnax part number: 34994-13 FITS 0.497'' DIAMETER TCC VALVE BORES

4L80E O-Ringed End Plug Kit | Sonnax | .668''

Sonnax part number: 34994-14K FITS 0.668'' DIAMETER TCC VALVE BORES

4L80E Line Regulated Pressure Regulator Valve | Sonnax

Sonnax part number: 34200-14K 4L80E 4L85E Lube Regulated Pressure Regulator Valve No tooling required The OE pressure regulator valve design prevents adequate cooler flow at low RPM and high...

4L80E Pump Body w/ Gears (1997-UP) .700'' Wide Pump Bushing

Part number: A34510EAFits: 4L80E · 1997-up A pump body with gears for late-model GM 4L80E transmissions built from 1997 on, sized for the 0.70" wide pump bushing. It is sized for the 0.70 inch wide...

4L80E Pump Bolt - Used

Part number: 114P80Fits: 4L80E A used pump bolt for GM's 4L80E transmission. This is a cleaned and inspected used bolt, sold individually as a single bolt for this application, tested and confirmed...

TH400 4L80E Pump Stator & Center Support Sealing Ring - Metal

Part number: 34181Fits: TH400, 4L80E, TH425 Metal sealing ring for the pump stator and center support of GM's Turbo 400 (TH400) and 4L80E automatic transmissions. Reference number 34406-SP. It is a...

4L80E TCC Conversion Valve by TransGo

Part number: 48-CCVFits: GM 4L80E / 4L85E · 1991-2013 TransGo converter flow correction kit (48-CCV) for 1991 to 2013 GM vehicles with the 4L80E and 4L85E. It is a drop-in kit for running a torque...

4L80E Boost Valve Kit (O-Ring Style Pumps)

Sonnax part number: 34200-01K O-Ring style. Kit can be retrofit to back to '89 units. See instructions for details. Common problems in vehicles with GM 4L80-E and 4L85-E transmissions are...

4L80E Boost Valve Kit - Sonnax

Sonnax part number: 34200-10K Common problems in vehicles with GM 4L80-E and 4L85-E transmissions include uncontrollable line rise (upward of 500 psi), high line pressure in Reverse, broken direct...

4L80E Line Pressure Booster Kit by Sonnax

Sonnax part number: 4L80E-LB1Our SKU: 1015CFits: 4L80-E, 4L85-E Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work...

4L80E Pump Pressure Regulator Valve by Sonnax

Sonnax part number: 34200-14KOur SKU: 1406AFits: 4L80-E, 4L85-E The OE pressure regulator valve design prevents adequate cooler flow at low RPM and high pressure/demand conditions, which can create...

4L80E Boost Valve Kit (1991-UP w/ Factory Style Sleeve) (Sonnax)

Part number: 34200-03KFits: 4L80E · 1991-up A boost valve kit for 4L80E automatic transmissions built in 1991 and later, made by Sonnax. It pairs the boost valve with a factory-style sleeve. It is...

4L80E 4L85E Pump Gear Set (1991-UP)

Part number: 1700AFits: 4L80E / 4L85E · 1991-up A new pump gear set for the 4L80E and 4L85E, covering 1991-UP models, for General Motors automatic transmissions. It includes the gear pair used inside...