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Automatic transmission extension housing seal, 47.93 × 68.68 × 14.78 mm, corresponding to National 9449.
ATP JO-57
JO-57
$14.18
Tax included
| Delivery within 2-3 business days
Automatic transmission extension housing seal, 47.93 × 68.68 × 14.78 mm, corresponding to National 9449.
ATP JO-57 is an automatic transmission extension housing seal corresponding to the National and Timken 9449 family. It is intended for a larger output shaft and appears in compatible GM TH400 applications.
Application / fitment
JO-57 is catalogued for selected automatic transmissions using the 9449 seal, including many GM TH400 applications and certain transmissions in Jaguar, Chevrolet, GMC, Buick and Pontiac vehicles. Coverage is broad, so transmission type, shaft diameter and housing bore must be confirmed.
- part type: automatic transmission extension housing seal
- sample transmission: compatible GM TH400 units
- cross-reference numbers: National 9449, Timken 9449, SKF 18992 and PTC SL81
- selected OE numbers: GM 8625893, 8626009 and 8655031
- location: extension housing at the output shaft or slip yoke
- UPC: 740993012153
Inspect the yoke sealing surface, extension-housing bushing clearance and transmission vent before installation. Press the seal in squarely with a suitable driver and lubricate the lip with ATF. JO-57 must not be confused with the smaller HO-8 seal.
Technical information
- shaft diameter: 1.887 in / approximately 47.93 mm
- outside diameter: 2.704 in / approximately 68.68 mm
- width: 0.582 in / approximately 14.78 mm
- lip material: nitrile rubber / NBR
- design: spring-loaded multi-lip
- catalogue type: 74
- repair bushing: not included; supplied in National 5208 kit
- sale unit: 1 seal
