The Hastings Piston Ring Set 100.50 refers to a set of piston rings designed to fit engines with a bore size of 100.50 mm

The Hastings Piston Ring Set 100.25 refers to a set of piston rings designed to fit engines with a bore size of 100.25 mm

The Hastings Piston Ring Set 100.00 refers to a set of piston rings designed to fit engines with a bore size of 100.00 mm

​Hard Blok Engine Block Filler 860228 (Tall Fill, 28 lbs) is a cement-based filler designed to reinforce engine blocks, commonly used in drag racing and high-performance applications.

The Hard Blok Engine Block Filler 860212 (Short Fill, 12 lbs) is a high-performance, cement-based filler designed to reinforce engine blocks, commonly used in drag racing and high-performance applications.

The HF Throttle Body Spacer 90mm improves airflow and throttle response by creating space between the intake manifold and throttle body, compatible with LS-style 4-bolt throttle bodies.

The HF Throttle Body Spacer 102mm improves airflow and throttle response by creating space between the intake manifold and throttle body, compatible with LS-style 4-bolt throttle bodies.

The HF Throttle Body for Nissan Y61 (80mm) is a high-performance upgrade designed to improve airflow and throttle response for the Nissan Y61 Patrol.

The HF Throttle Body 90mm in Silver is a high-performance throttle body designed to improve airflow and throttle response for enhanced engine performance.

HF Throttle Body 127mm Silver – High-performance throttle body with a 127mm diameter, anodized silver finish, and aluminum construction for enhanced airflow and throttle response.

The HF Throttle Body 102mm Silver is a billet aluminum upgrade that boosts airflow and throttle response for high-performance LS engines.

HF Stainless Steel Pipe 4.5" ST – 4.5-inch stainless steel pipe with a standard thickness for custom exhaust or intake applications.

HF Stainless Steel Pipe 4.5" Elbow 90D – 4.5-inch stainless steel elbow with a 90-degree bend for custom exhaust or intake systems.

HF Stainless Steel Pipe 4.5" Elbow 45D – 4.5-inch stainless steel elbow with 45-degree bend for high-performance exhaust or intake systems.

HF Stainless Steel Pipe 4.5" 90D 4"x12" – 4.5-inch stainless steel pipe with 90-degree bend and 4"x12" length for custom exhaust or intake use.

HF Stainless Steel Pipe 4.5" 90D – 4.5-inch stainless steel pipe with a 90-degree bend for custom exhaust or intake fabrication.

HF Stainless Steel Pipe 4.5" 45D – 4.5-inch diameter stainless steel pipe with 45-degree bend for custom exhaust or intake fabrication.

HF Stainless Steel Pipe 4" ST – 4-inch stainless steel pipe with standard thickness for custom exhaust or intake setups.

HF Stainless Steel Pipe 4" Elbow 90D – 4-inch stainless steel elbow with a 90-degree bend for custom exhaust or intake systems.

HF Stainless Steel Pipe 4" Elbow 45D – 4-inch stainless steel elbow with 45-degree bend for custom exhaust or intake fabrication.