Part # 330663

Joint transm auto

Name: Joint transm auto
Brand: National
SKU: BCZK_330663
Availability: InStock

Fits Chrysler, DeSoto, Dodge & more — 157 vehicle applications

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Free ShippingOrders $99+

WarrantyManufacturer backed

Easy Returns30-day policy

Canadian OwnedShipped across Canada

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National 330663 Vehicle Fitment

Fits 157 vehicles

This Joint transm auto fits Chrysler, DeSoto, Dodge, Fargo and 1 more makes vehicles.

1961 Dodge P300 Van
1961 Dodge P200 Van
1960-1961 Dodge D100 Series
1960-1961 Dodge D200 Series
1960-1961 Dodge D300 Series
1960-1961 Dodge Polara
1960-1961 Dodge W100 Series
1960-1961 Dodge W200 Series
1960-1961 Dodge W300 Series
1960-1961 Dodge Pioneer
1960-1961 Dodge Seneca
1960-1961 Dodge Dart
1960-1961 Dodge Phoenix
1960 Dodge Matador
1959 Dodge D100 Pickup
1959 Dodge D200 Pickup
1959 Dodge D300 Pickup
1959 Dodge W100 Pickup
1959 Dodge W200 Pickup
1959 Dodge W300 Pickup
1957-1961 Dodge Lancer
1957-1961 Dodge Custom
1957-1959 Dodge Coronet
1956-1960 Dodge Truck

National 330663 Specifications

Material: Nitrile
Housing Bore: 1.874
Inside Diameter: 34.930
Part Description: Oil Seal
Unit of Dimension: Inch
Width: 7.920

National 330663 Product Description

National 330663 Boîte automatique – Carter arrière – Joint

Key Features

Delivers quality and reliable performance for every type of repair
Design type: spring loaded; single-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; un solo 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 Automatic Transmission Extension Housing Seal at Autrex with vehicle fitment details, current pricing, and checkout options for the National 330663. Eligible orders over $99 may qualify for free shipping, with some exceptions.

Ratings & Reviews

4.7out of 5

Based on 47 reviews

Direct fit, no surprises
Marc 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 Canada
Jen 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 side
Steve 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 again
Amrit 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 again
Daniel 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 330663

What vehicles does the National 330663 fit?

The National 330663 fits 50 vehicle applications including 1956-1961 Chrysler 300, 1956-1961 Chrysler Imperial, 1957-1961 Chrysler New Yorker, 1957-1961 Chrysler Newport, 1957-1961 Chrysler Town & Country and 45 more. Check the full fitment list above to confirm your vehicle.

What are the shipping options for the National 330663?

Shipping options for the National 330663 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.

What is the price of the National 330663?

For current pricing on the National 330663, please call us at 1-866-461-2787. Availability and final order details are confirmed before checkout is completed.

Is the Joint transm auto a direct fit replacement?

Yes, the Joint transm auto 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 transm auto come with?

The Joint transm auto comes with the standard National manufacturer warranty. Please check the product specifications for exact warranty terms.

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