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Mack Parts

JAK'S Diesel is your source for Mack truck parts across the full lineup — engine, gasket, and driveline components for E7, E-Tech, ASET, and the MP7/MP8 platforms. This is our largest catalog, built on deep PAI Industries coverage of Mack and Volvo-heritage engines, so the part you need is usually a quick cross-reference away and ready to ship same-day on in-stock parts from Colorado.

Not sure which number fits? Send us your OEM, superseded, or competitor part number and we'll cross-reference it. Browse by category below, or call (720) 445-6249 for a quote.

Showing 12 of 2700 Mack Parts
311151 Mack Spacer
Mack TRL-1076/1078 TRANSMISSION 5-SPEED
311151 Mack Spacer
31KD1151
JAK'S JAKS-311151
Available · Confirm Lead Time
$10.58
1…111112113

Choosing the Right Mack Parts

Heavy-duty diesel components must be matched to the exact engine and application. Before ordering from this collection, verify the part number, engine model, engine serial number, and any casting or calibration number shown on the original component.

Fitment information to have ready

  • OEM, dealer, casting, or interchange part number
  • Engine manufacturer, model, and engine serial number (ESN)
  • Truck year and model when the component is chassis-specific
  • Core details for remanufactured or exchange components

Need a fitment check?

Use the OEM cross-reference tool or text a clear photo of the part tag to (720) 445-6249. A JAK'S Diesel specialist can confirm the match before the part ships.

Got a Number We Don't List?

Text a photo of the part tag — a specialist crosses it and quotes you fast.

Text a Part-Tag Photo(720) 445-6249