ACDELCO Standard Replacement Differential Pinion Seal — direct fit for Ford Mustang 5.0L V8 (1979-1995). Genuine quality replacement built to OEM tolerances, ships to all 50 USA states from RevXSC.

Why this differential pinion seal fits your Ford Mustang

Engineered by ACDELCO as a standard replacement grade differential pinion seal for the 5.0L V8 engine, this 3604 matches factory mounting points and form factor so install requires no modification. Fits Rear; w/ 8.8 IN Diameter Ring Gear or Rear; w/ 7.5 IN Diameter Ring Gear Standard replacement spec — the same dimensions, materials and performance envelope as the original factory part.

Replaces these OEM & cross-reference numbers

Search by any number below — they all match ACDELCO 3604:

• Ford / Motorcraft OEM: E5DZ4676A
• Ford / Motorcraft OEM: C7AW4676A
• Ford / Motorcraft OEM: E8TZ4676C
• Ford / Motorcraft OEM: E4TW4676AA
• Ford / Motorcraft OEM: E8TW4676BA
• Ford / Motorcraft OEM: F65Z-3N134-AA
• Ford / Motorcraft OEM: YL8W-7H426-AA
• Ford / Motorcraft OEM: BR3Z-4676-A
• Ford / Motorcraft OEM: D9AZ4676A
• National: 3604
• Timken: 3604
• SKF: 18136
• SKF: 18190
• ACDelco: 29249
• Mopar: T3903
• General Motors: 12305284
• Chicago Rawhide: 18136
• Chicago Rawhide: 18190
• Victor Reinz: 47449
• Victor Reinz: 47680
• NTN: NS3604

Fitment

Specifications

• Brand: ACDELCO
• Quality tier: Standard Replacement
• Part number / SKU: 3604
• Category: Drivetrain > Differential Pinion Seal
• Fits: Ford Mustang 5.0L V8 1979-1995
• Notes: Fits Rear; w/ 8.8 IN Diameter Ring Gear or Rear; w/ 7.5 IN Diameter Ring Gear
• Shipping: Ships to USA (lower 48 + AK + HI)

Installation tips

Always replace differential pinion seal components in matched sets where applicable, torque fasteners to factory spec, and inspect adjacent drivetrain components for wear during installation. If you're not sure which variant matches your VIN, send us the last 8 digits of the VIN before checkout and we will confirm fitment.

Related parts for your Ford Mustang

• Browse all Drivetrain parts
• More from ACDELCO
• All Ford Mustang parts
• Search SKU 3604

FAQ

Is 3604 a direct replacement?
Yes — ACDELCO 3604 is built to OEM form/fit/function for the Ford Mustang 5.0L V8 (1979-1995).

Do you ship to my state?
We ship to all 50 USA states. Tracking is provided.

What's the difference between Economy, Standard Replacement and Heavy Duty?
Economy is the value-priced option for everyday driving; Standard Replacement matches OEM spec; Heavy Duty uses upgraded materials for towing, fleet and severe service.

How can I confirm fitment?
Match year, make, model and engine (1979-1995 Ford Mustang 5.0L V8). When in doubt, send your VIN — we verify before dispatch.

Keywords: ACDELCO 3604, 3604 differential pinion seal, ford mustang differential pinion seal, ford mustang 5.0l v8 differential pinion seal, ford mustang differential pinion seal 1979-1995, standard replacement differential pinion seal ford mustang, oem replacement differential pinion seal ford mustang, aftermarket ford mustang differential pinion seal, buy 3604 online usa, ford mustang differential pinion seal usa, ford mustang 5.0l v8 parts, acdelco differential pinion seal 1979-1995, E5DZ4676A differential pinion seal, C7AW4676A differential pinion seal, E8TZ4676C differential pinion seal, E4TW4676AA differential pinion seal, E8TW4676BA differential pinion seal, F65Z-3N134-AA differential pinion seal, YL8W-7H426-AA differential pinion seal, BR3Z-4676-A differential pinion seal, D9AZ4676A differential pinion seal, National 3604, Timken 3604, SKF 18136, SKF 18190, ACDelco 29249, Mopar T3903, General Motors 12305284, Chicago Rawhide 18136, Chicago Rawhide 18190, Victor Reinz 47449, Victor Reinz 47680, NTN NS3604

Note: The product image is for illustrative purposes only. Actual product may vary slightly in appearance, packaging, or labeling. Fitment and specifications are guaranteed to OEM standards.