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631GC5172BM8 | Mack E7/EM7 12L Turbocharger, New

Pricing: $907.32

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Need more boost?

Nothing is more embarrassing than getting passed by a hybrid when you have your pedal to the floor. It’s time to replace that worn out turbo with something new. Whether you need a stock replacement or are shooting for more power Highway and Heavy Parts has you covered.

Choose balanced, long-lasting power you can count on with a turbocharger from Highway and Heavy Parts.These parts aren't some no-name, knock-off that come from some dirty factory where acceptable tolerances are between ’close enough’ and ’ehh, no one will notice’. We only work with reputable aftermarket suppliers, most of which supply the OE, meaning you can rest assured you've got quality you can count, a 1-Year Warranty, and savings up to 50% off OE Prices.

Let's keep you spooling into another million miles

  • Don’t overpay when you can get a brand new Turbocharger made to OEM specifications for a fraction of the cost compared to the OE in addition to equal or better quality.

  • Our house brand turbo comes from the same manufacturer that supplies the OEM, the only difference is you’ll get a much lower price.

  • Each turbo is designed with high quality components and tested for maximum durability to withstand extreme conditions inside your engine.

  • Our turbos are balanced to ensure long lasting dependable power and thoroughly inspected from fit to finish to ensure you get quality at its best.

  • Also, your engine will get more power with a turbocharger that has a cast iron turbine.

  • Maximize your engine with a quality turbo to go a million more miles. It doesn’t get better than that!


  • (1) Turbocharger with Mounting Gaskets


1-Year Parts Warranty

Warranty acceptance/denial will be at the sole discreation of each respected manufacturer. Each of HHP's manufacturers utilizes their own warranty procedures which vary in claim review time (typically between 3-5 weeks). On items that carry a labor warranty, rates are paid on flat-rate book time. Rates vary by manufacturer.
OEM Applications:
  • 174826
  • 631GC5172AM7
  • 631GC5172AM7X
  • 631GC5172AM8
  • 631GC5172AM8X
  • 631GC5172BM7
  • 631GC5172BM7X
  • 631GC5172BM8
  • 631GC5172BM8X
  • 631GC5172M7
  • 631GC5172M7X
  • 631GC5172M8
  • 631GC5172M8X

Technical Data

Application: E7, EM7 12.7L

E7 Engine Specifications:
Year: 1989-2002
Liter: 12.0
CID: 728
Cylinders: L 6
Bore/Stroke: 4.8755-4.8770", 6.500"
Compression Ratio: 16.5:1
Firing Order: 1-5-3-6-2-4
Comments: 12.0 Diesel, 4 Valve Per Chamber

Tune-Up Specifications:
Intake Valve Lash: .016" Cold
Exhaust Valve Lash: .024" Cold

When putting together, make sure airtake to turbo is clean. Use a fresh air cleaner. Pre-lube turbo (pre-fill with engine oil prior to starting).

If replacement is due to oil failure, remove the charge air cooler. Make sure it's emptied, drained and cleaned. Hose can be drained, too.

To ensure maximum turbocharger life and efficiency and engine power, (and to lower engine operating cost) be sure to follow engine manufacturer’s service instructions:

Oil change intervals
Oil filter system maintenance
Oil pressure control
Air filter system maintenance


  • P128286
  • P128286
  • HHP
  • New


Shipping Information

  • Item Requires Shipping
  • 44.0 lbs.
  • W16.0000” x H16.0000” x L16.0000”

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