Pioneer Cables 759016 Automatic Transmission Extension Housing Seal - Rear

Automatic Transmission Extension Housing Seal

Pioneer Cables 759016 is an automatic transmission extension housing seal built to match the original dimensions needed for a proper output-side seal. With a 1.75 in inside diameter, 2.6875 in outside diameter, and 0.5 in thickness, it supports a precise seal at the transmission extension housing on a wide range of Ford, Chevrolet, GMC, and Mazda applications.

• Exact-fit replacement for automatic transmission extension housing service
• 1.75 in inside diameter for the output shaft area
• 2.6875 in outside diameter for a secure housing fit
• 0.5 in thickness for the specified sealing profile
• Direct application coverage for many trucks, vans, SUVs, and performance cars
• Part number 759016 for fast catalog matching

Fitment and Cross References

Compatible With 1990-2006 Chevrolet Silverado 1500, output; 1990-2006 GMC Sierra 1500, output; and 2006-2008 Ford Ranger, output. This part cross-references National 4583 and SKF 14978 for the same application. Additional vehicle coverage includes Mazda B2300, B3000, and B4000, plus Chevrolet Tahoe, Trailblazer, Astro, Blazer, Camaro, Corvette, and GMC Yukon, Savana, Sonoma, and Jimmy applications. Pioneer Cables 759016 also appears in interchange listings with multiple OE and aftermarket references for transmission sealing service.

What This Seal Helps Address

• Transmission fluid seepage at the extension housing
• Leakage around the output shaft area
• Contamination entering the rear of the transmission
• Seal wear from age, heat, and mileage
• Service issues during extension housing or output seal replacement

Installation Notes and Tips

Verify the transmission family and housing style before installation, especially on applications noted with flange, boot, or extension-specific requirements. Confirm the inside diameter, outside diameter, and thickness against the removed seal and the vehicle listing before assembly. Clean the sealing bore and shaft surface thoroughly so the new seal seats evenly and maintains consistent contact.

Quality Assurance

Pioneer Transmission Components are positioned as exact-fit replacement parts, and this seal follows that OE-style sizing approach for dependable service on the listed applications. Use the part number 759016 and the vehicle-specific notes to confirm the correct transmission setup before installation.