4F27E / FNR5 / FN4A-EL

When the pump bushing in an automatic transmission wears down, shaft movement increases and seal life drops quickly. This listing covers a single pump bushing designed for 4F27E, FNR5, and...

When the overdrive band in a 4F27E, FNR5, or FN4A-EL unit has worn beyond spec, the transmission begins slipping in the affected range, and a direct replacement band cut to...

A pack that slips under throttle is telling you the friction material is done, whatever the fluid looks like on the stick.4F27E friction clutch pack STAGE-1. Each disc is matched...

Old sealing material gets brittle in storage as well as in service, which is why age matters as much as mileage.4F27E pump body lathe cut seal. The rubber is rated...

The piston is what converts line pressure into clamping force, so a leaking one makes every other repair pointless.4F27E Piston interm od servo. The set covers the apply positions a...

A solenoid that sticks intermittently throws a code the customer never reproduces for the shop.4F27E Switch RangeNeutral Safety (9 Prong). The unit meets the electrical specification the controller was calibrated...

A piston that leaks past its seal applies the pack slowly, and slow apply is what burns friction material.FNR5 bonded piston kit bonded pistons. The seals are bonded to the...

When bushing wear goes uncorrected in a 4F27E, FNR5, or FN4A-EL unit, shaft runout and end-play stack up until pressure circuits lose efficiency and shift feel degrades. This bushing and...

Seals at the shaft are the last line between the fluid and the driveway.4F27E Front UPMETAL CLAD SEAL. Shell and lip are both sized to the positions they seat in.The...

When the controller commands a shift and nothing happens, the circuit is usually the culprit, not the clutch.4F27E solenoid epc (pressure control). The unit meets the electrical specification the controller...

A cracked or hardened piston seal bleeds off apply pressure and the clutch it feeds slips under load.4F27E 4F27E PISTON KIT. This piston set restores a positive seal so the...

Replacing a shaft seal costs minutes on the bench and hours once the unit is in the vehicle.4F27E front pump aftermarket metal clad seal. The outer shell is sized to...

4F27E FNR5 FN4A-EL Rebuild Kit for 4F27E, FNR5 and FN4A-EL automatic transmissions, 2005 and later. Includes frictions, band, gasket and seal set and Automatic Transmission Filter for a complete overhaul....

Friction discs wear as a normal part of service, and once the material is down the pack cannot hold the torque the unit was built for.4F27E clutch pack frn5 2005....

A cracked or hardened piston seal bleeds off apply pressure and the clutch it feeds slips under load.4F27E 4F27E FN4A-EL PISTON KIT STK. This piston set restores a positive seal...

A cracked or hardened piston seal bleeds off apply pressure and the clutch it feeds slips under load.4F27E retainer direct (od) clutch (bonded) piston. The set covers the apply positions...

Friction material separates from its core long before the disc looks worn, and the failure arrives with no warning.4F27E Clutch Pack Module Clutch Pack Module OE Standard. The set covers...

Once friction material glazes over, no amount of line pressure brings the holding capacity back.FNR5 fs5a-el FRICTION CLUTCH PACK. The facing is applied to the core to the specification the...

When the direct clutch circuit in a 4F27E, FNR5, or FN4A-EL automatic transmission shows slippage or burned friction material, the friction module itself is often the part that needs replacement,...

When a rebuild on a 4F27E, FNR5, or FN4A-EL unit needs just the steel module, this listing delivers that single piece without bundling parts you may already have on the...

FNR5 Overhaul Kit for 4F27E, FNR5, FN4A-EL and FS5A-EL automatic transmissions, 2005 and later. Includes gasket and seal set for a complete overhaul. 1 pieces in 1 components. Overhaul Kit...

4F27E FNR5 Banner Rebuild Kit for 4F27E, FNR5 and FN4A-EL automatic transmissions, 2005 and later. Includes frictions and gasket and seal set for a complete overhaul. 24 pieces in 7...

A burnt pack leaves the steels glazed and cupped, and new friction material seated against that face wears out in a fraction of its service life.FNR5 Steel Clutch Pack. These...

An electrical fault in the shift circuit shows up as a stored code, a harsh shift or a gear the unit will not select.4F27E XS4Z-7H103-AB - Electrical Components Solenoid. The...

When the oil cooler on a 4F27E FNR5 FN4A-EL unit fails, fluid temperatures climb and hydraulic pressure becomes inconsistent, two conditions that accelerate wear throughout the entire automatic transmission. This...

Keeping the hydraulic circuit of an automatic transmission without particulate starts with an Automatic Transmission Filter that fits precisely and seals the pickup without restriction. This is a single deep-pan...

4F27E Overhaul Kit for 4F27E, FNR5 and FN4A-EL automatic transmissions, 2000 and later. Includes gasket and seal set for a complete overhaul. 1 pieces in 1 components. Overhaul Kit for...

Using the wrong component in an automatic transmission rebuild costs the job twice: once for the part and again for the teardown.4F27E drum reverse clu. The part is matched to...

Internal specifications change mid production, which is why the unit code matters more than the model year.4F27E drum direct od clutch (3 clutch) (2-holes bottom of ring bore) used. The...

4F27E FNR5 Banner Rebuild Kit for 4F27E, FNR5 and FN4A-EL automatic transmissions, 2000 to 2010. Includes frictions and gasket and seal set for a complete overhaul. 21 pieces in 6...

A cracked or hardened piston seal bleeds off apply pressure and the clutch it feeds slips under load.4F27E 4F27E FNR5 PISTON KIT STK. This piston set restores a positive seal...

FN4A-EL FNR5 4F27E Complete Transmission Rebuild Kit [1999-UP] OE-quality friction components designed to provide reliable clutch engagement and consistent operation under normal transmission service conditions. What's Included: - 3x Fn4a-el...

A leaking metal clad seal shows up as fluid on the case and, left alone, as a low level that starves the pump.FN4A-EL metal clad seal axle (left right) 99-up05-up...

Debris from a failed clutch pack ends up in the Automatic Transmission Filter, and reusing it after a rebuild puts that debris straight back into the new parts.4F27E Automatic Transmission...

Once the element loads up, the bypass opens and unfiltered fluid runs straight through the unit.4F27E on Automatic Transmission Filter Kit with Pan Gasket. The pickup and seal are sized...

The cost of a wrong part is never the part; it is the second teardown.4F27E rear cover universal Hard Part. It meets the dimensions the assembly was built around.Internal specifications...

A plugged pickup aerates the fluid, and aerated fluid cannot hold pressure anywhere in the circuit.4F27E ON Automatic Transmission Filter Kit with Pan Gasket. The media flows at the rate...

A separator plate with a worn orifice changes the apply rate of every shift it controls.4F27E fs5a-el (Improved) shift kit. Bores, valves and plate are matched as an assembly.Valve travel...

FN4A-EL Overhaul Kit for 4F27E, FNR5 and FN4A-EL automatic transmissions, 1999 and later. Includes gasket and seal set for a complete overhaul. 1 pieces in 1 components. Overhaul Kit for...

Once friction material glazes over, no amount of line pressure brings the holding capacity back.4F27E FNR5 FN4A-El Friction Module. This pack restores the torque capacity the unit had when it...

Lip seals take a set in the groove and stop wiping the bore the way they did when new.4F27E forward clutch piston. This set returns the apply circuit to full...

A pack with a leaking piston never reaches full clamp, whatever the pressure gauge says.FNR5 piston reverse cl only fs5a-el (bonded) 1.375 thk. The set covers the apply positions a...

Lip seals take a set in the groove and stop wiping the bore the way they did when new.4F27E direct (od) clutch(bonded) piston. This set returns the apply circuit to...

A shaft seal riding in a grooved surface never seals again, whatever its condition.4F27E axle (both sides) metal clad seal. The seal is produced to the bore and shaft it...

Debris in the valve body holds a valve open just long enough to burn the pack it feeds.4F27E Shift Kit correctiontransgo 2006. This restores the apply rates the shift schedule...

A shift that arrives late is an electrical symptom until the circuit is ruled out.4F27E 21 Solenoid internal (9-pin conn 5-2 pin conn pin conn 1-ground) harness. It is built...

An electrical fault in the shift circuit shows up as a stored code, a harsh shift or a gear the unit will not select.4F27E sensor vss output speed (2 prong)...

A solenoid that sticks intermittently throws a code the customer never reproduces for the shop.4F27E shift c d e (pwm) solenoid. It is built to the resistance and flow the...

When the controller commands a shift and nothing happens, the circuit is usually the culprit, not the clutch.4F27E solenoid shift a b (on off) (side conn) (can use for d...

A rebuild with reused seals is a rebuild that comes apart again.FN4A-EL valve body gasket. Each seal is formed to the groove and bore it serves.The sealing surfaces have to...