New Cylinder Head | Volvo D13, D13A, D13F / Mack MP8 / 21042138 / 21342245

New Upgraded Copper Injector Cup

OE Replacements: 21042138, 22251142, 22498383, 23930296, 21042138, 21342245, 21042154, 23930296, 85000815, 85003217, 22250859, 22498276, 21582793, 50012100001, 21625908, 85003962

Upgrade your engine performance and reliability with this brand-new cylinder head, precision-engineered for Volvo D13, D13A, and D13F series engines as well as Mack MP8 platforms. This direct-fit OEM replacement offers superior durability and is ideal for fleet owners, rebuilders, and repair shops seeking long-term reliability without the risk of cracks or warpage common in older heads.

This is not a remanufactured component — it’s a completely new casting, ready for installation, and built to meet or exceed OEM standards.

Key Features:

• Fits Volvo D13A, D13F, D13 standard models

• Compatible with Mack MP8 engines

• Replaces OEM part numbers: 21042138, 21342245

• New casting – no core required

• Precision-machined with pre-installed valve seats and guides

• Ideal for EPA07 and early EPA10 engines

• Built for durability under extreme temperature and pressure conditions

Vehicle Compatibility

This cylinder head is a direct-fit replacement for Volvo and Mack heavy-duty diesel engines equipped with the following engines:

• Volvo D13A, D13F, D13 (EPA 2007 – early EPA 2010)

• Mack MP8 (matching OEM specs)

• Commonly found in Volvo VNL, VNM, and Mack Pinnacle models

What’s Included:

• 1x Complete Cylinder Head (New)

• Pre-installed valve guides and seats

• Cam bearings pre-installed (if applicable)

• Ready for assembly with rocker arm, injectors, and head gasket (not included)

Warranty & Quality:

• 12-month manufacturer’s warranty against manufacturing defects

• Pressure-tested and quality-verified before shipment

FAQs

What trucks does the 21042138 cylinder head fit?

This head fits Volvo D13A, D13F, and standard D13 engines, as well as Mack MP8 platforms using OEM part numbers 21042138 and 21342245.

Is this a new or remanufactured cylinder head?

This is a brand-new cylinder head — not remanufactured — with no core charge. It’s ready for installation and built to OEM specifications.

Can I use this head on a 2008 Volvo VNL with a D13A engine?

Yes, this head is designed to fit EPA 2007+ engines like the D13A used in 2008 Volvo VNL models. Confirm OEM part number before ordering.

What is the difference between 21042138 and 21342245?

Both part numbers refer to compatible cylinder heads for Volvo D13 and Mack MP8 engines. They may differ by casting updates or supplier ID, but serve the same application.

How do I know if my D13 cylinder head is cracked?

Common symptoms include loss of coolant, overheating, white smoke, or oil contamination. A cylinder head pressure test can confirm a crack.

Is this cylinder head compatible with Mack MP8 engines?

Yes, the head is fully compatible with Mack MP8 engines that use the 21042138 or 21342245 part numbers.

What should I replace when installing this head?

Always replace the head gasket, head bolts, and inspect camshaft and valve train components during installation.

What are the torque specs for installing this cylinder head?

Torque specs vary by engine generation. Refer to the OEM Volvo or Mack service manual for torque sequences and values.

Does this head come with valves installed?

No, this cylinder head includes valve seats and guides pre-installed, but valves, springs, and rockers are not included.

How fast can I get this cylinder head shipped?

Most orders ship within 1 business day. Expedited freight options are available at checkout.