Street. Track. Everything between.
07 3276 7829
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Cometic Ford 351W/351C 335 Series V8 / 351W Windsor V8 Viton Rear Main Seal 2 piece

SKU: CGSC5689

Rear Main Seals

CG Main Seals...

Cometic Ford 351W/351C 335 Series V8 / 351W Windsor V8 Viton Rear Main Seal 2 piece

SKU: CGSC5689

Rear Main Seals

CG Main Seals...

A$124.63
IN STOCK! Est Ship 3-7 Days days. In stock at 2 locations (more than 10 available)

Added to cart

We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Rear Main Seal - 2-Piece - Viton - Small Block Ford - Each

Rear Main Seal

Cometic utlizes their in-house dynamometersand engine assembly rooms to ensure quality and reliability

Additional Information

Ford 351C/351M 335 Series V8; 351W-aWindsor V8 Viton Rear Main Seal; 2 Piece

Part Type

Engine Crankshaft Seal

Product Overview

COMETIC Front and Rear Main Crank Seals are manufactured from the best materials available and are suited for all types of environments. Each seal meets or exceeds OEM quality.

Additional Application Notes
• 2 Piece

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-09 03:11:39

Features

  • All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns
  • Meets Or Exceeds OEM Quality

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Description:Ford 351C/351M 335 Series V8; 351W-aWindsor V8 Rear Main Seal
Engine:Ford 351W/351C Small Block V8
Part Number:cgsC5689
Position:Rear
Title:Cometic Gasket Ford 351C/351M 335 Series V8, 351W  Windsor V8 Rear Main Seal

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 18:39:39

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Cometic Gasket, Cometic, Cometic Gasket Automotive, Cometic Gasket Marine, Cometic Gasket Powersports, COMETIC GASKETS, Cometic Powersport Gaskets
StreetFX SKU cgsC5689
SFX Item ID 4161152
Accounting SKU cgs-C5689
Manufacturer SKU C5689
Manufacturer UPC 191070006822
Alternative References C5689, CAGC5689, CGT-C5689

Rear Main Seal, 2-piece Style, Viton®, Ford, Lincoln, Mercury, 5.8L, Each

Keep your oil from escaping with rear main seals from Cometic Gasket. If you have a wet spot on the rear of your oil pan, spots on your driveway, or garage floor, or worse, an oil-covered transmission, then you'd better get rear main seals from Cometic. They are made from heat-resistant, chemical-resistant Viton® material and are available in one and 2-piece seal styles. When you need superior gaskets for your high performance vehicle, Cometic has the gaskets and rear main seals to fit your application.

Product Attributes
BrandCometic
Manufacturer's Part NumberC5689
Part TypeRear Main Seals
Product LineCometic Rear Main Seals
UPC191070006822
Rear Main Seal Style2-piece
Rear Main Seal MaterialViton®
QuantitySold individually.

Compatibility

Loading compatibility information...

Keep shopping

More from Cometic Gasket