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2005 4L80E Rebuild Parts List: Every Part That Fits

Every part below is confirmed to fit a 2005 4L80E. Order the parts you need in one cart.

Build your 2005 4L80E kit

Rebuild and Overhaul Kits

Rebuild / overhaul kit: 4L80E Transmission Overhaul Gasket and Seal Kit (Regular, $76.99) or 4L80E Transmission Banner Kit with Raybestos Frictions (Alternate, $165.99)

Solenoids

Shift solenoids A and B: 4L80E/4L85E Shift Solenoid Kit A & B - 24230289 24230288 (Regular, $39.99)
Solenoid kit: 4L80E Solenoid Kit with Internal Harness and Filter, 2004-Up (Regular, $173.99) or 4L80E Solenoid Kit with Internal Harness, Filter and Gasket (Alternate, $175.99)

Bands

Band: 4L80E Rear Reverse Band, BorgWarner High Energy 38014BW (Upgrade, $79.99)

Sprags and Roller Clutches

Sprag / one-way clutch: 4L80E Intermediate Sprag Clutch, 34-Element Heavy Duty (Upgrade, $76.99)

Shift Kits

Shift kit: TransGo SK 4L80E Shift Kit, Reprogramming Kit for GM 4L80E/4L85E (1991-Up) (Upgrade, $116.99)

Filter, Pan and Pan Gaskets

Transmission pan: 4L80E Transmission Oil Pan with Drain Plug, OE 265-810 (Regular, $66.99) or 4L80E Transmission Oil Pan Kit with Filter and Gasket (Alternate, $74.99)
Filter and gasket kit: 4L80E Transmission Filter and Gasket Kit for GM 2500 and 3500 Trucks and Vans, Deep Pan (1999-2006) (Upgrade, $28.99)

What changed for 2005

Valve body (2004-2009): Late VB with late-style EPC (silver canister, different connector).
Solenoids (2004-2009): Late-style EPC (silver canister, different pin/connector; vendor part 24225320).
Pump (2004-2009): 2004-up case has no cooler return hole at the pump face; a '97-design cover must have its cooler return hole plugged (GM pin 24232339) or use the later cover where GM cast the hole shut.
Clutches (1999-2009): Intermediate backing plate becomes flat .275 in thick ('99-later); friction counts unchanged per Raybestos '96-on pack. 4L85E friction counts not separately confirmed.
Band (1999-2009): Wider 1.250 in front band with longer front servo apply pin; band and pin must match case year.
Case (2004-2009): Case type 3: cooler-return boss and pump-face hole removed (stepped deck per forum); needs plugged or late pump cover. 2WD extension housing bushing larger OD (forum
Switches and sensors (1995-2009): External NSS / MLPS on selector shaft; long manual shaft (Sonnax 38511-04K '95-later).
Overhaul kits (2004-2009): Same soft-parts kit as 1997-up, but electrical kit is 2004-up and the 2004+ van extension bushing is not in standard kits.

Build the 2005 4L80E kit 2004 4L80E parts list 2006 4L80E parts list Every 4L80E year

FAQ

What parts are year-specific on a 2005 4L80E?

On a 2005 4L80E these parts are year-specific: valve body, solenoids, pump, clutches, band, case, switches and sensors, overhaul kits. Every part listed above is confirmed for 2005, so you can order from this list with confidence.

Can I order only some of the 2005 4L80E parts?

Yes. The 2005 4L80E kit builder lets you tick only the parts you need, and they go into one cart.