Head Components

What This Collection Covers

Head Components groups together the parts that live at and around the cylinder head, the area of the engine most affected by heat, combustion pressure, and clamping load. This includes complete heads, head gaskets, head studs and bolts, rocker arms, lifters, camshaft and lifter kits, main stud and bolt kits, and rotating assembly components used in short block and long block builds. Whether the project is a factory-spec rebuild or a boosted engine build pushing well past stock output, the parts in this collection are selected for confirmed fitment and documented torque or clearance specifications.

Why Cylinder Head Components Matter

The cylinder head and its supporting hardware seal combustion pressure, control valvetrain motion, and manage heat transfer out of the engine. A weak link anywhere in this system, whether an undersized head bolt or an incorrect gasket thickness, can cause a blown head gasket, oil leaks, or lost compression that undermines the rest of the build.

Head Gaskets and Sealing

Head gaskets in this collection include multi-layer steel (MLS) designs from Cometic and HKS metal gaskets sized for platforms including GM LS and LSX, Nissan KA24DE and SR20DET, Subaru EJ20, Dodge Viper, and VW/Audi 1.8T and 2.0T turbo engines. MLS gaskets are the standard choice for performance builds because of their resistance to combustion pressure and thermal cycling compared to composite gaskets.

Choosing the Right Gasket Thickness

Gasket thickness directly affects static compression ratio and deck clearance, so builders increasing bore size, running forced induction, or changing piston compression height need to select thickness carefully rather than defaulting to the thinnest option available.

Head Studs and Bolt Kits

ARP head stud and bolt kits are the backbone of this category, covering domestic V8 platforms like the Ford 4.6L Cobra, import turbo engines like the VW 1.8T and Renault F4R, and classic applications like the BMC B-Series. ARP studs use aerospace-grade materials to maintain consistent clamping force through repeated heat cycles, which is critical for boosted and high-compression engines.

Torque-to-Yield vs Studs

Factory torque-to-yield head bolts are designed for one-time use and stretch permanently when torqued, while ARP studs are reusable and provide more consistent, repeatable clamping force, making them the preferred choice for engines that will be serviced or rebuilt more than once.

Rocker Arms and Valvetrain Hardware

This collection includes roller rocker arms from COMP Cams for small block Chevy applications and billet rocker arm bridges from Fleece Performance for Cummins 24V diesel engines, along with lifter trays and DOD delete kits for GM LS and Gen III/IV HEMI engines. Upgraded rocker arms reduce valvetrain deflection at higher RPM and improve durability under sustained high-load operation.

DOD and AFM Delete Kits

Displacement on demand and active fuel management delete kits replace factory lifters with non-collapsing versions, eliminating a common failure point on GM LS and HEMI engines that see performance use or towing duty.

Diesel and Heavy-Duty Head Components

Fleece Performance head gaskets, cylinder heads, and rocker arm bridges cover Dodge Cummins 5.9L and 6.7L and Ford Power Stroke 6.0L platforms, addressing the higher cylinder pressures and head lift concerns common on modified diesel trucks used for towing or performance tuning.

Why Diesel Platforms Need Reinforced Head Hardware

Diesel engines run substantially higher compression and cylinder pressure than gasoline engines, making head gasket failure and head lift more common under increased boost or fueling, which is why reinforced head studs and HD cylinder heads are popular upgrades on these platforms.

Import and Turbo Platform Coverage

Head components for Nissan KA24DE and SR20DET, Subaru EJ20, and VW/Audi turbo four-cylinder engines are well represented in this collection, giving import performance builders the same quality of head gasket and stud options available for domestic V8 platforms.

Matching Bore Size to Gasket Specification

Import turbo engines are frequently bored oversize as part of a performance build, so confirming the exact bore diameter against the head gasket specification prevents sealing issues at the cylinder wall.

Top Head Component Brands

• ARP. Head studs, bolt kits, and main studs using aerospace-grade fasteners for consistent clamping force
• Cometic Gasket. Multi-layer steel head gaskets for domestic and import performance engines
• COMP Cams. Rocker arms, lifter kits, and DOD delete kits for GM LS and small block platforms
• Fleece Performance. Diesel head gaskets, cylinder heads, and rocker arm bridges for Cummins and Power Stroke
• HKS. Metal head gaskets for Nissan RB26DETT and SR20DET turbo platforms
• Edelbrock. Head bolt kits and cylinder head hardware for Jeep and domestic engines

How to Choose the Correct Head Component

• Confirm the exact engine code, displacement, and cylinder count
• Measure or confirm bore diameter before selecting a head gasket
• Match gasket thickness to target compression ratio and deck clearance
• Decide between reusable studs and factory-style torque-to-yield bolts
• Follow the manufacturer torque sequence and specification exactly during installation
• Check whether the application requires DOD or AFM lifter deletes for performance use
• Confirm rocker arm ratio matches the camshaft profile being used
• Verify thread pitch and length when ordering stud or bolt kits
• Consider MLS gaskets for any boosted or high-compression build
• Cross-check part numbers against documented fitment data before ordering

Common Questions

What head gasket thickness should I use for my build?

Head gasket thickness selection depends on the deck height of the block, desired compression ratio, and combustion chamber volume of the head. Thicker gaskets lower compression ratio, which is useful when increasing bore size or running forced induction.

Are ARP head studs required for turbo builds?

ARP head studs are strongly recommended for any forced induction application because they maintain more consistent clamping force than standard head bolts under repeated thermal cycling and high cylinder pressure.

What is the difference between head bolts and head studs?

Head bolts thread directly into the block and are torqued from the head side, while studs are installed into the block first and the head is torqued down with a nut, offering more consistent and repeatable clamping force.

Do I need new head bolts every time I remove the head?

Factory torque-to-yield head bolts are designed for one-time use and should be replaced any time the head is removed, while ARP studs can be reused as long as they are inspected and properly re-torqued.

What is a DOD delete kit and why would I need one?

A DOD delete kit replaces factory displacement on demand lifters with standard non-collapsing lifters, which is a common upgrade for performance builds or engines that see towing duty where the factory system is not desired.

Why do diesel engines need stronger head studs?

Diesel engines generate significantly higher cylinder pressure than gasoline engines, especially under increased boost or fueling, making head lift and gasket failure more common without reinforced head studs.

How do I know what rocker arm ratio to use?

Rocker arm ratio should match the camshaft grind specification provided by the cam manufacturer, since mismatched ratios change actual valve lift and can affect valvetrain geometry.

Can I reuse my factory cylinder head or do I need a new one?

Factory heads can often be reused after machining and inspection, but severely worn, cracked, or previously damaged heads should be replaced with a new or remanufactured unit for reliability.

What torque sequence should I follow for head bolts or studs?

Always follow the specific torque sequence and specification published by the head bolt or stud manufacturer for your exact engine, since incorrect sequence or torque value can cause uneven clamping and gasket failure.

Do I need special tools to install ARP head studs?

Some ARP head stud kits include an installation tool for engines with limited clearance, and all kits require an accurate torque wrench and the specified thread lubricant for correct clamping values.

Why Buy Head Components from Black Ops Auto Works

Black Ops Auto Works stocks 972 Head Components SKUs across domestic, diesel, and import platforms with real fitment data, competitive pricing, and support from staff who build these engines themselves. Products are filterable by year, make, model, trim, engine, and drivetrain to confirm the correct application before ordering.

For focused shopping, browse our Engine, Engine Block, Valves & Components, and Pistons collections.