Go-Parts
Cart 0
Your cart is empty
Add an item to see it appear here.

GMC P3500 Automatic Transmission Extension Housing Seal Replacement

1
SELECT Year
  1. ✓ In Stock 1979-1986 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1979-1986 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 9613S
    $6.69 View part →
  2. ✓ In Stock 1979-1981 GMC P3500 Automatic Transmission Extension Housing Seal (Timken)

    1979-1981 GMC P3500 Automatic Transmission Extension Housing Seal (Timken)

    Partslink #: 9613S
    $7.12 View part →
  3. ✓ In Stock 1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    Partslink #: SO-22

    Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring

    $8.86 View part →
  4. ✓ In Stock 1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    Partslink #: 760009

    Position: Housing To Case O-Ring, Square-Cut - Rear Bearing Retainer To Case O-Ring

    $8.88 View part →
  5. ✓ In Stock 1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    Partslink #: JO-57

    w/o Boot Width: 0.5625" Outer Diameter: 2.9375" Inner Diameter: 2.0625"

    $10.47 View part →
  6. ✓ In Stock 1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    Partslink #: 759023

    w/o Boot Width: 0.5625" Outer Diameter: 2.9375" Inner Diameter: 2.0625"

    $10.69 View part →
  7. ✓ In Stock 1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 9449
    $11.16 View part →
  8. ✓ In Stock 1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    Partslink #: HO-9

    W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output

    $11.72 View part →
  9. ✓ In Stock 1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1979-1980 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    Partslink #: 759016

    W/O Boot; W/Flange; W/O Extension Width: 0.5" Outer Diameter: 2.6875" Inner Diameter: 1.75" Position: Output

    $11.74 View part →
  10. ✓ In Stock 1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Timken)

    1979-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Timken)

    Partslink #: 9449

    1.89 in. Shaft

    $12.47 View part →
  11. ✓ In Stock 1991-1993 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991-1993 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 4583

    with GMC 4L60-E Transmission without Boot

    $12.64 View part →
  12. ✓ In Stock 1991-1993 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991-1993 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 4934

    Boot Type with GMC 4L60-E Transmission

    $20.00 View part →
  13. ✓ In Stock 1995-1996 GMC P3500 Automatic Transmission Extension Housing Seal (National)

    1995-1996 GMC P3500 Automatic Transmission Extension Housing Seal (National)

    Partslink #: W0133-2343999

    54mm Dia.

    $21.09 View part →
  14. ✓ In Stock 1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    Partslink #: 759099

    w/ Boot Width: 1.625" Outer Diameter: 3.125" Inner Diameter: 2.0625"

    $28.29 View part →
  15. ✓ In Stock 1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (ATP)

    Partslink #: JO-124

    w/ Boot Width: 1.625" Outer Diameter: 3.125" Inner Diameter: 2.0625"

    $28.31 View part →
  16. ✓ In Stock 1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 4333N

    Boot Type 1.500 (in) Width with GMC 4L80-E Transmission

    $32.72 View part →
  17. ✓ In Stock 1991-1996 GMC P3500 Automatic Transmission Extension Housing Seal - Rear (ACDelco)

    1991-1996 GMC P3500 Automatic Transmission Extension Housing Seal - Rear (ACDelco)

    Partslink #: 24235725

    Automatic Transmission Extension Housing Seal; EXCEPT TRANSMISSION DRAIN PLUG (5F1); REAR) (HELIX

    $37.00 View part →
  18. ✓ In Stock 1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Timken)

    1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (Timken)

    Partslink #: 4333N

    Booted

    $37.54 View part →
  19. ✓ In Stock 1995-1996 GMC P3500 Automatic Transmission Extension Housing Seal (National)

    1995-1996 GMC P3500 Automatic Transmission Extension Housing Seal (National)

    Partslink #: W0133-2312082

    54mm Dia.

    $42.96 View part →
  20. ✓ In Stock 1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991-1999 GMC P3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 2457

    Over 15,000 (lb) Gross Vehicle Weight (GVW) without Boot

    $54.78 View part →
  21. ✓ In Stock 1995-1996 GMC P3500 Automatic Transmission Extension Housing Seal (National)

    1995-1996 GMC P3500 Automatic Transmission Extension Housing Seal (National)

    Partslink #: W0133-1727208

    54mm Dia.

    $58.81 View part →

What buyers are saying.

★★★★★ 4.9 1,451 verified reviews

Racing Partner Videos

Automatic Transmission Extension Housing Seal Compatibility for GMC P3500

Browse our selection of quality automatic transmission extension housing seal parts designed specifically for your GMC P3500. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.

Available Trims

Base · Value Van

Body Types

Cab & Chassis · Delivery Van · Motorhome - Cutaway · Motorhome - Stripped Chassis · Standard Cargo Van · Stripped Chassis

Engine Options

L4 3.9L · L6 4.8L · V6 4.3L · V8 5.7L · V8 6.2L · V8 6.5L · V8 7.4L

Transmissions

Automatic · Manual

Added to cart · Part