Mazda R2-A – Cylinder Head Assembly (Non-Turbo)

The Mazda R2-A Cylinder Head Assembly is a direct replacement part for the naturally aspirated (non-turbo) 2.2L diesel engine used in various Mazda commercial vehicles. Known for its mechanical simplicity and long service life, the R2-A engine is widely used in utility vans and trucks, especially in Asian markets.

Specifications:

• Engine Code: R2-A

• Displacement: 2.2L (2184cc)

• Engine Type: Inline 4-cylinder, diesel, naturally aspirated (non-turbo)

• Fuel System: Inline mechanical fuel injection pump (non-CRDi)

• Cylinder Head Material: Cast iron or aluminum alloy (depending on version)

• Valve Configuration: SOHC – Single Overhead Camshaft

• Valves Per Cylinder: 2 (Total: 8 valves)

• Cooling System: Water-cooled

• Glow Plug Ports: Yes (for cold starts)

• Compression Ratio: Approx. 21.2:1

Included Components (may vary by supplier):

• Intake and exhaust valves

• Valve guides and seals

• Valve springs and retainers

• Rocker arms and shafts (optional)

• Pre-machined camshaft housing (if integrated design)

Applications:

Commonly found in:

• Mazda B2200 (RWD diesel variants)

• Mazda Bongo / E2200 vans

• Ford Econovan (badge-engineered variants)

• Mazda Titan (older light-duty trucks)

Notes:

• Designed for non-turbo R2-A engines.

• Confirm engine code on the block before ordering.

• Use new head gasket and head bolts when installing.

• Not interchangeable with R2 or R2T (turbo) heads due to differences in porting and compression.

RF-A (NON TURBO): Has smaller injectors, and the bore thread is flushed inside

RF-B (TURBO): Has bigger injectors, bore thread located just on the surface