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GMC R3500 Automatic Transmission Extension Housing Seal Replacement

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  1. ✓ In Stock 1987-1990 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1987-1990 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 9613S
    $6.69 View part →
  2. ✓ In Stock 1987-1990 GMC R3500 Automatic Transmission Extension Housing Seal (Timken)

    1987-1990 GMC R3500 Automatic Transmission Extension Housing Seal (Timken)

    Partslink #: 9613S
    $7.12 View part →
  3. ✓ In Stock 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (ATP)

    1987-1991 GMC R3500 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 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1987-1991 GMC R3500 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 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (ATP)

    1987-1991 GMC R3500 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 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1987-1991 GMC R3500 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 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 9449
    $11.16 View part →
  8. ✓ In Stock 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (ATP)

    1987-1991 GMC R3500 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 1987-1991 GMC R3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1987-1991 GMC R3500 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 1991 GMC R3500 Automatic Transmission Extension Housing Seal (Timken)

    1991 GMC R3500 Automatic Transmission Extension Housing Seal (Timken)

    Partslink #: 9449

    Non Booted

    $12.47 View part →
  11. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 4583

    with GMC 4L60 Transmission without Boot

    $12.64 View part →
  12. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 4934

    Boot Type with GMC 4L60 Transmission

    $20.00 View part →
  13. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (Pioneer Cable)

    1991 GMC R3500 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 →
  14. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (ATP)

    1991 GMC R3500 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 →
  15. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 4333N

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

    $32.72 View part →
  16. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (Timken)

    1991 GMC R3500 Automatic Transmission Extension Housing Seal (Timken)

    Partslink #: 4333N

    Booted

    $37.54 View part →
  17. ✓ In Stock 1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    1991 GMC R3500 Automatic Transmission Extension Housing Seal (National Bearing)

    Partslink #: 2457

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

    $54.78 View part →

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Automatic Transmission Extension Housing Seal Compatibility for GMC R3500

Browse our selection of quality automatic transmission extension housing seal parts designed specifically for your GMC R3500. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.

Available Trims

Base · High Sierra · SLE · Sierra Classic

Body Types

Cab & Chassis · Crew Cab Pickup · Standard Cab Pickup

Engine Options

L6 4.8L · V8 5.7L · V8 6.2L · V8 7.4L

Transmissions

Automatic · Manual

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