National
Differential Pinion Seal
$9.72
National
Part # 6818
4.7(47 reviews)Joint de pignon
Fits Chevrolet, Pontiac, GMC — 163 vehicle applications
$32.91
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 6818 Vehicle Fitment
Fits 163 vehiclesThis Joint de pignon fits Chevrolet, Pontiac, GMC vehicles.
1960-1963 Chevrolet C10 Pickup
1960-1963 Chevrolet K10 Pickup
1960-1963 Chevrolet P10 Series
1960-1963 Chevrolet P20 Series
1960-1963 Chevrolet Suburban
1960-1963 Chevrolet C10 Panel
1960-1963 Chevrolet C30 Panel
1959-1964 Chevrolet El Camino
1959-1961 Chevrolet Kingswood
1959-1961 Chevrolet Parkwood
1959 Chevrolet 3B
1959 Chevrolet 3B
1958-1964 Chevrolet Biscayne
1958-1964 Chevrolet Impala
1958-1961 Chevrolet Brookwood
1958-1961 Chevrolet Nomad
1958 Chevrolet Yeoman
1957-1959 Chevrolet Truck
1957-1958 Chevrolet Del Ray
1956-1962 Chevrolet Corvette
1955-1964 Chevrolet Bel Air
1955-1957 Chevrolet One-Fifty Series
1955-1957 Chevrolet Two-Ten Series
1954 Chevrolet 1500
1953-1960 Chevrolet Sedan Delivery
1953-1960 Chevrolet Truck
National 6818 Specifications
- Width
- 12.700
- Housing Bore
- 3.000
- Grade Type
- Standard Replacement
- Width
- 0.500
- Shaft Diameter
- 44.170
- Thickness
- 0.500
National 6818 Product Description
National 6818 Différentiel – Joint de pignon
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 6818. 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 6818
What vehicles does the National 6818 fit?
The National 6818 fits 49 vehicle applications including 1958-1964 Chevrolet Biscayne, 1955-1964 Chevrolet Bel Air, 1959-1964 Chevrolet El Camino, 1958-1964 Chevrolet Impala, 1958-1964 Pontiac Strato-Chief and 44 more. Check the full fitment list above to confirm your vehicle.
What are the shipping options for the National 6818?
Shipping options for the National 6818 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 6818 cost?
The National 6818 is currently listed at $32.91 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.
