Cylinder Head

Fully rebuilt and converted for use with unleaded fuel. The 12G295 head is the open chamber, big valve performance head for small-bore motors

This adaper screws into the cylinder head. It is required when converting to mechanical water temperature gauge. Fits Lucas, Smiths, and other gauges.

Hex-head steel blanking plug for intake manifold or cylinder head temperature sender hole

Brass plug, 1098-1275cc engines. Often removed to clean the oil relief galley.

Improved cylinder head nut with integral flange replacing the earlier separate washer. Maintains clamping force for even torque. Sold each.

Some engines have the coil on a small bracket which is held to the engine on a cylinder head stud. This is the special extra-length version of the short cylinder head stud to give the little bit of extra threads it needs to allow the coil bracket to be fitted.

Long stud for cylinder head, use four (4). Sold each. Aftermarket.

Short cylinder head stud. Sold each. Aftermarket.

All-new aluminum 1275 cylinder head, based on the 12G1805/12G940 late Cooper S head casting; CNC ported and flowed for street performance

All-new aluminum 11-stud 1275 race cylinder head, based on the 12G1805/12G940 late Cooper S head casting.

Cylinder head for single-point injection (SPi) classic Minis. Casting #12G940, rebuilt fully in our shop with all new iron valve guides, exhaust valves and seals

A 1275 cylinder head, casting #12G940, rebuilt fully in our shop with all new iron valve guides, unleaded exhaust seats, exhaust valves and seals. Inlet valve is large 1.4" size

Fully rebuilt in our shop to include all new iron valve guides, unleaded exhaust seats, exhaust valves and seals. Modified for unleaded fuel.

Rebuilt completely in our machine shop, this head will include all new exhaust valves, guides and seals. Unleaded exhaust valve seats are installed. Springs and intake valves checked. Resurfaced

Classic Mini stage 2 1275cc lead-free ''GT'' cylinder head from Keith Calver; flow characteristics match or exceed Longman GT-7 head.

Vintage/SCCA Regional/autocross-spec race head, with unleaded seat conversion from Keith Calver

Heavy steel metal brackets, used in pairs to lift the engine; attach to valve cover studs. Sold each.

Most cylinder head used this fitting to connect the bypass hose to the water pump. It was deleted on later, A+ engines.

High-spec ARP-made flat washer to fit 3/8" stud or bolt. Thicker than most washers and parallel ground for flatness.

ARP high-spec washer for 3/8" stud. OD is .625" and thickness is .062. Black finish. Parallel ground for perfect fit and no loss of torque through your fasteners. Sold each.

ARP high-grade washer for head stud application. ID is for 3/8" stud, OD is .675" and .120" thickness to provide reliable torque through your fasteners

Gasket for the heater control valve on the cylinder head. Used under the blanking plate, also.

Valve / rocker cover gasket with notches for 10th and 11th studs of a Cooper S head. Originally fiber, now manufactured in cork.

Cork valve cover gasket for all classic Mini A-series and A+ engines; may require slight trimming on Cooper S models that have the extra head studs

Special as-original tapered 5/16'' cylinder head bolt as was used on the water pump end of the Cooper S block.

Special tapered 5/16'' cylinder head bolt as used on the water pump end of the Cooper S block; heavy-duty aftermarket version.

Head gasket set for all classic Mini 1275cc engines; made in the U.K.

Head gasket set for all clasic Mini 1275cc engines; includes a genuine Payen black composite head gasket, carb gaskets, manifold gasket, cork valve cover gasket, heater gasket, two manifold gaskets, and valve stem seals

This gasket set fits all 1275cc-based engines and includes a copper-composite head gasket.

Grey composite head gasket with steel fire rings for standard 1275/1300 engines.

Black composite head gasket for 1275cc or bigger Minis. This one is marked AF470 and features an improved seal for the rocker oil feed. Shellac finish is heat activated to

This is the "old reliable" copper 1275 head gasket that has been used since the 60s. A modern material now replaces the asbestos, but it still used by many for

Upgraded copper-composite head gasket for ''small-bore'' 850-1098cc engines

This is a high-compression gasket that was specially developed for 1275 Metros raced in England

Very complete kit includs all of the head studs, plus rocker studs. Parallel ground washers and 12 point nuts are included. Renowned Automotive Racing Products

Complete set of ARP head and rocker studs for 9-stud A-Series and A+ engines. Includes 12-point nuts and paralell-ground hardened washers for precise fitting.

ARP head stud, 5.65". Sold each.

ARP head stud, 4.25". Sold each.

Classic Minis with no heater will need to have the outlet on the cylinder head blocked off with this plate.

Small stud to secure heater valve or blanking plate to cylinder head.

Metal alignment sleeves to position the inlet manifold accurately in the cylinder head

A thicker-than-standard intake/exhaust gasket, with large inlet and exhaust port cutouts for use with modified cylinder heads and/or headers

Metal-faced manifold gasket, as used on all fuel-injected single-point (SPi) and multi-point (MPi) classic Minis

Stock gasket between the intake and exhaust manifold and the cylinder head.

Made from brass for heat and corrosion resistance, these nuts are intended specifically for this application. See also 51K1177 long nuts. Sold each.

Brass nut about 1'' long for easier tool access in the congested area of the carbs, intake and exhaust

A complete stainless steel stud and hardware set for the manifold face of your cylinder head.

Stock replacement stud for the classic Mini intake and exhaust manifold. Use six (6) per head