National
Differential Pinion Seal
$9.72
National
Part # 8181NA
4.7(47 reviews)Joint de pignon
Fits Ford, Mercury — 222 vehicle applications
$24.62
Only 2 left in stock
1
Express Checkout
Free ShippingOrders $99+
WarrantyManufacturer backed
Easy Returns30-day policy
Canadian OwnedShipped across Canada
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National 8181NA Vehicle Fitment
Fits 222 vehiclesThis Joint de pignon fits Ford, Mercury vehicles.
1975-1978 Ford Granada
1975-1978 Ford Pinto
1974-1978 Ford Mustang II
1974-1978 Ford Mustang II
1972-1974 Ford Gran Torino
1971-1978 Ford Pinto
1971-1972 Ford Maverick
1970-1977 Ford Maverick
1968-1974 Ford Torino
1968 Ford Torino
1967-1968 Ford Fairlane
1967 Ford Club Wagon
1966-1970 Ford Falcon
1964-1973 Ford Mustang
1964-1970 Ford Mustang
1963-1964 Ford Sprint
1962-1970 Ford Galaxie 500
1962-1967 Ford Club Wagon
1961-1970 Ford Falcon
1961-1965 Ford Falcon Sedan Delivery
1960-1970 Ford Country Sedan
1960-1970 Ford Fairlane
1960-1967 Ford Galaxie
1960-1966 Ford Country Squire
1960-1964 Ford Ranch Wagon
1960 Ford Starliner
1960 Ford Sunliner
1960 Ford Victoria
National 8181NA Specifications
- Inside Diameter
- 46.020
- Grade Type
- Standard Replacement
- Thickness
- 11.560
- Housing Bore
- 66.620
- Shaft Diameter
- 46.020
- Flanged Outside Diameter
- 2.940
National 8181NA Product Description
National 8181NA Différentiel – Joint de pignon pour Ford Mustang
Key Features
- Delivers quality and reliable performance for every type of repair
- Design type: spring loaded; multi-lip
- Good low temperature capability
- Low swell in hydrocarbon fluids
- Temperature range: -40°F to 225°F / -40°C to 107°C
- Baja expansión en fluidos de hidrocarburos
- Buena capacidad a bajas temperaturas
- Ofrece un rendimiento confiable de calidad para cada tipo de reparación
- Rango de temperatura: -40°F a 225°F / -40°C a 107°C
- Tipo de diseño: Carga de resorte; multi-labio
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
About National
Shop National Differential Pinion Seal at Autrex with vehicle fitment details, current pricing, and checkout options for the National 8181NA. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
4.7out of 5
Based on 47 reviews
- 538
- 46
- 31
- 21
- 11
- Direct fit, no surprisesMarc D.Verified BuyerMay 28, 2026
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
- Shipped fast across CanadaJen P.Verified BuyerMay 14, 2026
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
- Good part, double-check your sideSteve R.Verified BuyerApr 30, 2026
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
- Quiet againAmrit S.Verified BuyerApr 19, 2026
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
- Would buy againDaniel L.Mar 22, 2026
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
Frequently Asked Questions — National 8181NA
What vehicles does the National 8181NA fit?
The National 8181NA fits 45 vehicle applications including 1975-1978 Ford Granada, 1974-1978 Ford Mustang II, 1974-1978 Ford Mustang II, 1971-1978 Ford Pinto, 1975-1978 Ford Pinto and 40 more. Check the full fitment list above to confirm your vehicle.
What are the shipping options for the National 8181NA?
Shipping options for the National 8181NA are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
How much does the National 8181NA cost?
The National 8181NA is currently listed at $24.62 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Is the Joint de pignon a direct fit replacement?
Yes, the Joint de pignon by National is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
What warranty does the Joint de pignon come with?
The Joint de pignon comes with the standard National manufacturer warranty. Please check the product specifications for exact warranty terms.
