Cylinder Heads

Cylinder Heads: the deck that decides how your engine breathes and seals

The cylinder head caps the block, houses the valves and ports, and forms the top of every combustion chamber. It's where intake and exhaust flow is routed, where the valvetrain lives, and where the head gasket has to hold combustion pressure against the deck. People replace cylinder heads when a head cracks, warps, or drops a valve seat, or when they want a stronger casting to survive higher boost and cylinder pressure than a tired stock unit will take. On a hard-worked diesel, the head is often the first thing to give up, and a fresh or reman head restores the seal and the flow the engine was built with.

What ThreePiece stocks

This category currently lists 17 products from 4 brands: Fleece Performance (the bulk of the range at 13 listings), Cylinder Works, Industrial Injection, and S&S Cycle. Current pricing runs from $583 to $3,534 for what's in stock now, which is a live range and not a promise. Coverage spans model years from 2001 to 2023, and 16 of the 17 listings carry fitment data. Top makes here are GM, Dodge, Harley-Davidson, Kawasaki, and Ford, covering vehicles like the GM Duramax 2500/3500, Dodge Cummins, Harley-Davidson Touring, Kawasaki KX 250 F, and Ford Super Duty.

How to choose

The split here is mostly heavy diesel truck heads versus powersports heads. For a 6.7L Cummins, you're choosing between a straight replacement like the Industrial Injection stock head and a reman street unit like the Fleece Performance Cummins Street head, or the stouter Street HD version at the top of the price range if you're running more pressure. On the powersports side, the S&S Cycle Super Stock 89cc head kit covers Harley Touring, while dirt riders will want a bolt-in Cylinder Works head kit for the Kawasaki KX 250 F or the more affordable Cylinder Works CH3001-K01 kit. Match the part to your exact make, model and year before you buy.

What else you need

A head never goes back on alone. Plan on head gaskets to reseal the deck, and check the wider gasket kits for the smaller seals you'll disturb during the job. If you're this deep, it's also the time to inspect pistons and bearings. Diesel builds often pair head work with fuel pumps, and cooling matters, so browse radiators too. All of these sit under the Engine Components section.

Fitment and ordering

Confirm the head matches your engine before ordering. For help, call our team at 813-535-5801 or reach out through contact us. We offer free shipping on all orders, plus Affirm and Katapult financing if you want to spread the cost of a full rebuild.

Cylinder Heads: the deck that decides how your engine breathes and seals

The cylinder head caps the block, houses the valves and ports, and forms the top of every combustion chamber. It's where intake and exhaust flow is routed, where the valvetrain lives, and where the head gasket has to hold combustion pressure against the deck. People replace cylinder heads when a head cracks, warps, or drops a valve seat, or when they want a stronger casting to survive higher boost and cylinder pressure than a tired stock unit will take. On a hard-worked diesel, the head is often the first thing to give up, and a fresh or reman head restores the seal and the flow the engine was built with.

What ThreePiece stocks

This category currently lists 17 products from 4 brands: Fleece Performance (the bulk of the range at 13 listings), Cylinder Works, Industrial Injection, and S&S Cycle. Current pricing runs from $583 to $3,534 for what's in stock now, which is a live range and not a promise. Coverage spans model years from 2001 to 2023, and 16 of the 17 listings carry fitment data. Top makes here are GM, Dodge, Harley-Davidson, Kawasaki, and Ford, covering vehicles like the GM Duramax 2500/3500, Dodge Cummins, Harley-Davidson Touring, Kawasaki KX 250 F, and Ford Super Duty.

How to choose

The split here is mostly heavy diesel truck heads versus powersports heads. For a 6.7L Cummins, you're choosing between a straight replacement like the Industrial Injection stock head and a reman street unit like the Fleece Performance Cummins Street head, or the stouter Street HD version at the top of the price range if you're running more pressure. On the powersports side, the S&S Cycle Super Stock 89cc head kit covers Harley Touring, while dirt riders will want a bolt-in Cylinder Works head kit for the Kawasaki KX 250 F or the more affordable Cylinder Works CH3001-K01 kit. Match the part to your exact make, model and year before you buy.

What else you need

A head never goes back on alone. Plan on head gaskets to reseal the deck, and check the wider gasket kits for the smaller seals you'll disturb during the job. If you're this deep, it's also the time to inspect pistons and bearings. Diesel builds often pair head work with fuel pumps, and cooling matters, so browse radiators too. All of these sit under the Engine Components section.

Fitment and ordering

Confirm the head matches your engine before ordering. For help, call our team at 813-535-5801 or reach out through contact us. We offer free shipping on all orders, plus Affirm and Katapult financing if you want to spread the cost of a full rebuild.