Allison 1000 Pump Housing Gasket, Duramax | 2001-2019

Allison 1000 Pump Housing Gasket, Duramax | 2001-2019

This genuine Allison 29540130 pump housing gasket, which GM also calls the torque converter housing gasket, reseals the front pump on the Allison 1000 transmission behind the 6.6L Duramax LB7, LLY, LBZ, LMM, LML and L5P. It sits between the converter housing and the separator plate and keeps transmission fluid from leaking out at the front pump. It should be replaced any time the converter housing or front pump is separated.

Key Features

• Genuine Allison part 29540130
• Gray paper gasket, 0.91 mm thick
• Seals between the converter housing and separator plate
• Fits the Allison 1000 (5-speed and 6-speed) through 2019
• Sold individually; one required per transmission

Benefits

A front-of-transmission leak can come from the pump housing gasket, the converter housing gasket, the front pump seal or the converter housing bolt seals, and all of them come apart in the same job. Replacing them together means the transmission only has to come apart once. Replace if worn or damaged. Commonly replaced at the same time: Allison 1000 Transmission Converter Housing Gasket | 2001 - 2019, Allison Front Pump Seal | 2001 - 2019.

Frequently Asked Questions

Is there a kit with all the front reseal parts?
Yes. The Allison 1000 Converter Housing Reseal Kit, Duramax | 2001 - 2019 includes this gasket plus the converter housing gasket, converter housing seal, front pump seal, front pump bushing and converter housing bolt seals.

Will this fit the 10-speed?
No. This gasket is for the Allison 1000 through 2019. 2020 and newer trucks with the 10L1000 10-speed are not covered.

Fitment

Fits the Allison 1000 transmission in these trucks with the 6.6L Duramax LB7, LLY, LBZ, LMM, LML or L5P:

• 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD
• 2001-2006 Silverado and Sierra 3500, and 2007 3500 Classic
• 2007-2019 Silverado and Sierra 3500HD, including cab and chassis

One required per transmission.

What's Included

• (1) Genuine Allison pump housing gasket, 29540130

For warranty information or to submit a claim, see our Warranty Form.