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Allstar Performance

Allstar Performance Small Block Rear Main Seal Adapters ALL26125 Adapter, Billet Aluminum, 1 to 2-Piece Style, Chevy, Gen I, Kit

SKU: AAFALL26125

Rear Main Seal Adapters
Allstar Performance Small Block Rear Main Seal Adapters ALL26125 Adapter, Billet Aluminum, 1 to 2-Piece Style, Chevy, Gen I, Kit

Allstar Performance

Allstar Performance Small Block Rear Main Seal Adapters ALL26125 Adapter, Billet Aluminum, 1 to 2-Piece Style, Chevy, Gen I, Kit

SKU: AAFALL26125

Rear Main Seal Adapters
A$358.75
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Allstar Performance small block rear main seal adapters can be used to convert 1986 and later blocks with a one-piece rear main seal to accept an older-style, 2-piece seal crankshaft. These are essential when installing an early-style (1985 and earlier) crankshaft into 1986 and later blocks. These rear main seal adapters are available in different applications and can be used with a one-piece or 2-piece oil pan, depending on your application. They are made from billet aluminum and include hardware.

Additional Information

Use FEL2900 2pc Rear Main SealDo to the irregularities in block and oil pans this adapter is not designed to use the original style rubber rear oil pan seal. Apply a generous amount of RTV type sealant to the trough of the adapter plate in place of the rear pan seal for proper sealing. Note: Make sure sealing areas are clean and free of oil before installation.Replacement Part- ALL99135 P-bolt with Hardware

Part Type

Rear Main Seal Adapter Pre-86 Pan

Data: v4.2 - Upd: 2026-10-14 22:07:17

Specifications

Product Attributes - Brand
Allstar Performance
Product Attributes - Manufacturer's Part Number
ALL26125
Product Attributes - Part Type
Rear Main Seal Adapters
Product Attributes - Product Line
Allstar Performance Small Block Rear Main Seal Adapters
Product Attributes - UPC
848238017052
Product Attributes - Rear Main Seal Adapter Type
1-piece to 2-piece
Product Attributes - Rear Main Seal Adapter Material
Aluminum
Product Attributes - Rear Main Seal Adapter Color
Natural
Product Attributes - Mounting Hardware Included
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Use 2-piece oil pan with this adapter.

Reference Information

Brand Name/s Allstar Performance
StreetFX SKU aafALL26125
SFX Item ID 4772647
Supplier Item Code 4772647
Manufacturer SKU ALL26125
Manufacturer UPC 848238017052
Alternative References 2-Piece

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1976
    Ending Year1985
    Engine TypeV8
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
  • MakeCHEVROLET
    Beginning Year1976
    Ending Year1985
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I

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