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Allison Transmission Parts, Fluids and Supplies for Duramax Trucks

MadJack Diesel is your one-stop discount house for Allison transmission parts. We believe maintaining your Allison transmission should be easy and affordable, which is why we offer quality products at a discount. MadJack Diesel offers Allison transmission filters for Duramax trucks, Allison transmission fluid for GMC and Chevy Duramax, Allison performance kits and converters, Allison transmission pans, and more. We pride ourselves on our product quality, and we promise that the products you buy from us are Allison-branded products or of the same superior quality to OEM Allison parts.

In addition to our products, at MadJack Diesel we also pride ourselves on superior customer service. If you have a question about any of our products, please do not hesitate to give us a call. We’re not strangers to spending time on the phone talking to customers, explaining, and giving advice; it’s just how we do business. Another thing you can be sure of is fast delivery. We ship all of our in-stock items the same day if ordered before 3 p.m. pst. We’re confident you’ll find what you need for your Allison transmission at MadJack Diesel Performance.

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Amsoil Synthetic Torque Drive Transmission Fluid
Amsoil Synthetic Torque Drive Transmission Fluid
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Comes In:
1 Gal Jugs
2.5 Gal Jugs
16 Gal Keg
30 Gal Drum
55 Gal Drum
270 Gal Tote
Allison 1000 Transmission Pan OEM Replacement Gasket
Allison 1000 Transmission Pan OEM Replacement Gasket
MSRP $48.95
Our Price: $38.80
Savings: $10.15

Transynd Transmission Fluid Gallon Jug
Transynd Transmission Fluid Gallon Jug
MSRP $49.75
Our Price: $43.81
Savings: $5.94

TranSynd™ heavy-duty automatic transmission fluid, a remarkable synthetic oil exclusively formulated by Castrol for Allison Automatics, extends Allison transmission oil drain intervals 300%.
Allison Stamped Steel Deep Pan for Allison 1000/2000 Transmission
Allison Stamped Steel Deep Pan for Allison 1000/2000 Transmission
MSRP $110.25
Our Price: $75.60
Savings: $34.65

Allison Stamped Steel Deep Pan for Allison 1000/2000 Transmission
MadJack Diesel Performance Allison Transmission Maintenance Package 2001-Up
MadJack Diesel Performance Allison Transmission Maintenance Package 2001-Up
MSRP $131.58
Our Price: $97.53
Savings: $34.05

Includes 2 gallons of Fluid (your choice) and one Genuine Allison Spin-on Filter with options to add more fluid
MadJack Diesel Performance Allison 1000 Deep Pan Kit With Fluid
MadJack Diesel Performance Allison 1000 Deep Pan Kit With Fluid
MSRP $287.64
Our Price: $224.87
Savings: $62.77

Includes Allison Stamped Steel Deep Pan, 3 Gal of Fluid (Your choice), Genuine Allison Deep Internal Filter and Genuine Allison Spin-on Filter
PPE Low Profile (Stock Depth) Aluminum Transmission Pan 2001-Up
PPE Low Profile (Stock Depth) Aluminum Transmission Pan 2001-Up
MSRP $279.99
Our Price: $239.99
Savings: $40.00

PPE Low Profile (Stock Depth) Aluminum Transmission Pan Brushed Black 2001-Up
PPE Low Profile (Stock Depth) Aluminum Transmission Pan Brushed Black 2001-Up
MSRP $299.99
Our Price: $259.99
Savings: $40.00

PPE Low Profile (Stock Depth) Aluminum Transmission Pan Brushed Black 2001-Up
PPE Low Profile (Stock Depth) Aluminum Transmission Pan Brushed Black 2001-Up
MSRP $299.99
Our Price: $259.99
Savings: $40.00

PPE Allison 1000/2000 Deep Sump Trans Pan
PPE Allison 1000/2000 Deep Sump Trans Pan
MSRP $329.99
Our Price: $263.99
Savings: $66.00