Description
Restore Your Mack MP8 or Volvo D13 with a Complete Inframe Rebuild Kit
Is your Mack MP8 or Volvo D13 burning oil, losing compression, or showing metal in the oil pan? A new inframe rebuild kit from Highway and Heavy Parts gives you everything needed to renew the bottom end without pulling the engine from the frame, saving the cost and downtime of a full engine swap. Every 13 liter MP8 and D13 eventually needs an inframe overhaul, and the parts you choose for that job determine how many miles you get before the next one. Some OE rebuild kits are assembled with reconditioned or take off components to cut cost, which is not something you want inside a freshly rebuilt engine. HHP’s 85138502 kit uses all new parts, manufactured to OEM specifications and tolerances in an ISO 9001 certified facility, so you get factory level fit and performance without factory pricing.
What’s Included in the 85138502 Inframe Rebuild Kit
This kit is built for a full six cylinder inframe job on the Mack MP8 and Volvo D13 platform, covering the cylinder, bearing, and gasket components that wear hardest during normal operation.
Cylinder Kits and Head Gasket Set
Six complete cylinder kits, part number 21330684, replace the liners, pistons, rings, and related hardware for every cylinder in the bank, restoring proper compression and oil control. A full head gasket set, part number 21409435, seals the cylinder head back to the block, and two oil pan gaskets, part numbers 21293367 and 20541940, keep the bottom end sealed against leaks once the engine is back in service.
Main Bearing Kit and Thrust Washers
The kit also includes six rod bearings, part number 20580558, seven main bearings, part number 20530916, and a thrust washer kit, part number 21267844, giving the crankshaft new wear surfaces on every journal. Replacing bearings as a complete set, rather than piecemeal, helps keep clearances even across the crank and reduces the chance of a comeback repair.
Fitment Information for the Mack MP8 and Volvo D13
This rebuild kit is built for the Mack MP8 and Volvo D13 heavy duty diesel engine family and fits applications calling for OEM part number 85124806 or 85138502, along with cross reference numbers AAMVPD13RBK-10, ERK-4806, MP8103-037, MV1303-001, and VPD13RBK-10. Because rod and main bearings are machined to specific clearances, you will need to select a rod bearing size and a main bearing size, Standard, .010, .020, .025, .030, or .050, at checkout to match your engine’s current bore and journal dimensions. Diesel inframe kits are engine specific, so HHP also asks for your engine serial number, VIN, or CPL so the parts team can confirm fit before the kit ships, which helps you avoid ordering the wrong bearing size for a six cylinder MP8 or D13 block.
Get Your New Mack MP8 / Volvo D13 Inframe Rebuild Kit from HHP
Every HHP inframe rebuild kit ships with zero core charge and a 1 year parts warranty, backed by ASE certified technicians who can answer questions from the moment you order through final installation. Orders placed by 2 PM EST on in stock items ship the same day, Monday through Friday, so your shop is not left waiting on parts. Combine quality parts, factory level tolerances, real fitment verification, and fast nationwide shipping, and you have everything needed to get your Mack MP8 or Volvo D13 back on the road with confidence.
Frequently Asked Questions, Mack MP8 / Volvo D13 Inframe Rebuild Kit (85138502)
What does the 85138502 inframe rebuild kit include?
The kit includes six cylinder kits (21330684), a head gasket set (21409435), six rod bearings (20580558), two oil pan gaskets (21293367 and 20541940), and a main bearing kit with seven main bearings (20530916) and a thrust washer kit (21267844). Together these parts cover the cylinder, bearing, and gasket needs of a full inframe overhaul.
Does this kit fit both the Mack MP8 and Volvo D13?
Yes. The MP8 and D13 are the same 13 liter heavy duty diesel platform built by the Volvo Group, so a single kit fits both. It cross references to OEM and aftermarket numbers including 85124806, AAMVPD13RBK-10, ERK-4806, MP8103-037, MV1303-001, and VPD13RBK-10.
How do I know which bearing size to order?
Rod and main bearings are machined to specific oversizes to match how much your crankshaft journals have been turned down during prior service. Choose Standard, .010, .020, .025, .030, or .050 based on your engine’s measurements, and submit your engine serial number, VIN, or CPL so HHP can verify the correct fit before the kit ships.
Is this rebuild kit new or remanufactured?
This is a new parts kit, not remanufactured or reconditioned. Every component is manufactured to OEM specifications and tolerances in an ISO 9001 certified facility, so you are not introducing used or take off parts into a freshly overhauled engine.
Does the kit include a core charge?
No. This inframe rebuild kit ships with zero core charge, so there is no deposit to pay and no core to send back after installation.
What warranty comes with this Mack MP8 / Volvo D13 rebuild kit?
The kit is backed by a 1 year parts warranty from HHP, along with support from ASE certified technicians who can answer questions about the order or the installation.
Can I complete a full inframe overhaul with just this kit?
This kit covers the core cylinder, bearing, and gasket components for an MP8 or D13 inframe job. Depending on the condition of your engine, you may also want to inspect or replace items like seals, the front cover gasket, or injector seals separately. HHP’s technicians can help you confirm whether any additional parts make sense for your specific rebuild.
How fast will my rebuild kit ship?
In stock orders placed by 2 PM EST ship the same day, Monday through Friday, so your shop can keep the rebuild moving without unnecessary downtime.
