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732GB3491AM | Mack E7 Loaded Cylinder Head, New

Pricing: $2,453.40

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Is your Cylinder Head in it for the long haul?

We all know in order to get a million of miles out of your engine you need to keep your engine cool, well lubricated, and perform regular maintenance. Let one of these slip... and your rig is going to wind up in the shop with you stuck waiting for the repair.

It's no secret that diesel engine parts can cost an arm and a leg. That's where HHP’steps in; we offer premium aftermarket parts at up to 50% off OEM prices. While most believe aftermarket retailers sell cheap parts with zero warranty, packed in a beat-up box from who knows where, HHP is here to kick that stereotype to the curb. HHP provides Cylinder Heads with additional engine cooling properties and a 1-year warranty. How's that for an aftermarket part?

Need a little extra proof? Let's talk Cylinder Heads.

  • Why buy reman when you can buy new? Our Mack E7 Cylinder Heads are CNC machined with tolerances that meet or exceed OEM.

  • New valves, guides, and keepers pre-installed, this Cylinder Head includes everything you need to go another million miles.

  • This head comes pre-drilled to work with both pinned and pinless bridge configurations.


  • (1) Cylinder Head (Includes valves, spring, retainers, keepers)


1-year Unlimited Mileage warranty
OEM Applications:
  • 3323
  • 732GB3491AM
  • MAK732GB3491AM

Technical Data

Year - 1989-2002
Liter - 12
CID - 728
Bore - 4.8755-4.8770"
Stroke - 6.500"
Compression Ratio - 16.5:1
Firing Order - 1-5-3-6-2-4

Cylinder Head
New Thickness/Measured At 6.3910-6.3970"
Minimum Thickness 6.3810"

Installed Stem Height
Intake: 2.0000-2.030"
Exhaust: 2.0050-2.0350"
Stem Diameter
Intake: .3720-.3730"
Exhaust: .3710-.3720"

Intake: 30° OR 20°
Exhaust: 30°
Intake: .090" MIN
Exhaust:.055" MIN
Intake: .035-.049" V/PRO
Exhaust:.034-.048" V/REC *

Guide Height
Intake: .919-.999"
Exhaust: .919-.999" (23.343-25.375 MM)
Guide Clearance
Intake: .0015-.0035"
Exhaust: .0025-.0045"
Valve Seal Type

Seat Width
Intake: .051-.081" (1.295-2.057 MM)
Exhaust: .051-.081" (1.295-2.057 MM)
Seat Angle
Intake: 20° OR 30°
Exhaust: 30°
Seat Outside Diameter
Intake: 1.8310-1.8320"
Exhaust: 1.6920-1.6930"

Seat Insert Height
Intake: .3600-.3640"
Exhaust: .3720-.3760"
Seat Insert Bore Diameter
Intake: 1.8285-1.8295"
Exhaust: 1.6875-1.6885"
Seat Insert Bore Depth
Intake: .3600-.3640"

Valve Spring
Free Length
Intake: 2.6400"
Exhaust: 2.6400"
Open Test Press
Intake: 150# @ 1.4350
Exhaust: 150# @ 1.4350



  • P200523
  • P200523
  • HHP
  • New

Shipping Information

  • Item Requires Shipping
  • 155.0 lbs.
  • W40.0000” x H24.0000” x L48.0000”

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