Cylinder head - 5 main bearing engine
no breather pipe
18GB to 18GG engines
Alloy rocker covers
Requires: 1
with breather pipe
From 18GH engines
Requires: 1
on rocker cover 'patents'
18GB to 18GG engines
Requires: 1
on rocker cover - 'patents'
18GB to 18GG engines
Requires: 1
on rocker cover - 'British Leyland'
18V engines on (1971 - 1978)
approx 30 mm x 40 mm
Requires: 1
on rocker cover - 'emission control'
US specification, 18V engines on
Requires: 1
black plastic, with breather
To 18V engines
Requires: 1
red plastic, vented
To 18V engines
Requires: 1
black plastic, non vented
18V engines on
Requires: 1
chromed - length: 7/8"
18GB engines
Requires: 2
with stud
From 18GD engines
Requires: 2
Requires: 2
screwed - in rocker shaft
Requires: 1
plain - in rocker shaft
Requires: 1
with centre tapped hole
To September 1974
Requires: 1
with offset tapped hole
From September 1974. Rubber bumper cars
Requires: 1
for rocker shaft adjusting screw
Requires: 1
centre rocker shaft pedestals
Requires: 2
rocker arm. Must be reamed and drilled for oil holes
Requires: 8
rocker arm
Requires: 8
rocker arm adjusting screw - 5/16" UNF
Requires: 8
new item. Assembled head with valves, single valve springs, valve guides and valve seat inserts. Variant with in-line oil feed
MGB chrome bumper cars to September 1974 (Roadster to GHN5-359169, GT to GHD5-360069)
Requires: 1
new item. Assembled head with valves, double valve springs, valve guides and valve seat inserts. Variant with in-line oil feed
MGB chrome bumper cars to September 1974 (Roadster to GHN5-359169, GT to GHD5-360069)
Requires: 1
new item. Complete with valves, valve guides, valve springs and single valve seats. Variant with off-set oil feed
MGB rubber bumper cars from September 1974 (Roadster from GHN5-359170, GT from GHD5-360070)
Requires: 1
new item. Complete with valves, valve guides, valve springs and double valve seats. Variant with off-set oil feed
MGB rubber bumper cars from September 1974 (Roadster from GHN5-359170, GT from GHD5-360070)
Requires: 1
exchange. Identification: Double valve springs
18GB to 18GD engines
Requires: 1
exchange. Identification: Double valve springs
18GG engines
Requires: 1
exchange. Identification: Single valve springs
18V engines to September 1974
Requires: 1
exchange. Identification: Single valve springs
18V engines September 1974 on
Requires: 1
exchange - characteristic: double valve springs and injector tubes
US specification, 18GF to 18GK engines
Requires: 1
exchange. Identification: Single valve springs and injector tubes
US specification, 18V engines to September 1974
Requires: 1
exchange. Identification: Single valve springs and injector tubes
US specification, 18V engines September 1974 on
Requires: 1
November 1967 to June 1976
Requires: 1
coolant - variant with spade connector
From June 1976
Requires: 1
to October 1967 (Roadster to GHN3-138360, GT to GHD3-137795) - feature: 18G, 18GB and 18GB engines plus radiator with rear filler neck
Requires: 1
European models from November 1967 to June 1976 (Roadster from GHN4-138401 to GHN5-409401, GT from GHD4-139471 to GHD5-406357) - feature: 18GD to 18V engines and radiator with centre filler neck
Requires: 1
USA and Canada models from November 1967 to June 1976 (Roadster from GHN4-138401 to GHN5-409401, GT from GHD4-139471 to GHD5-406357) - feature: 18GF to 18V engines and radiator with centre filler neck
Requires: 1
US specification
From 18GF engines
Requires: 3
thermostat housing, US specification
From 18GF engines
Requires: 3
from June 1976 onwards (Roadster from GHN5-410001, GT from GHD5-410351) - feature: 18V engines and radiator with separated expansion tank
Requires: 1
thermostat housing, plastic
June 1976 on, 18V engines. Identification: Radiator with separated expansion tank
Requires: 1
thermostat housing, brass
June 1976 on, 18V engines. Identification: Radiator with separated expansion tank
Requires: 1
rubber
June 1976 on, 18V engines. Identification: Radiator with separated expansion tank
Requires: 1
plastic
June 1976 on, 18V engines. Identification: Radiator with separated expansion tank
Requires: 1
heater valve
When heater not fitted
Requires: 1
air injection, US specification
From 18GF engines
Requires: 4
inlet valve. Bronze type for lead free applications
Requires: 4
exhaust valve. Bronze type for lead free applications
Requires: 4
39.6 mms
To October 1966. 18GB engines, 18GD engines to 835 and 18GF engines to 2158
Requires: 4
made from 214N stainless steel. Head diameter: 1.35"
To October 1966. 18GB engines, 18GD engines to 835 and 18GF engines to 2158
Requires: 4
39.6 mms
To October 1971, 18GD engines from 836, 18GF engines from 2159, all 18GG, 18GJ and 18GK
Requires: 4
gas flowed type made from 214N stainless steel. Head diameter: 1.34"
To October 1971, 18GD engines from 836, 18GF engines from 2159, all 18GG, 18GJ and 18GK
Requires: 4
41.1 mms
18V engines to September 1974, Chrome bumper
Requires: 4
gas flowed type made from 214N stainless steel. Head diameter: 1.34"
18V engines to September 1974, Chrome bumper
Requires: 4
39.6 mms
18V engines September 1974 on, Rubber bumper
Requires: 4
gas flowed type made from 214N stainless steel. Head diameter: 1.34"
18V engines September 1974 on, Rubber bumper
Requires: 4
for exhaust valve. Hardened variant for lead free applications - dimensions: 1.505 x 1.183 x 0.250"
Requires: 4
valve cotter
To October 1966. 18GB engines, 18GD engines to 835 and 18GF engines to 2158
Requires: 8
with outer groove - supplied in pairs
To October 1966. 18GB engines, 18GD engines to 835 and 18GF engines to 2158
Requires: 8
no outer groove
All models October 1966 on
Requires: 16
upper
To October 1966. 18GB engines, 18GD engines to 835 and 18GF engines to 2158
Requires: 8
top
To October 1971, 18GD engines from 836, 18GF engines from 2159, all 18GG, 18GJ and 18GK
Requires: 8
top
October 1971 on, all 18V engines
Requires: 8
improved version - may replace OE valve stem seal
Requires: 8
supplied in sets of 16 double springs
To October 1971. 18GB to 18GG and 18GK engines
Requires: 1
inner - separately
To October 1971. 18GB to 18GG and 18GK engines
Requires: 8
outer - separately
To October 1971. 18GB to 18GG and 18GK engines
Requires: 8
set of 8 single valve springs
MGB with 18V engines (from October 1971). Identification: top timing mark on front cover
Requires: 1
for vehicles with single valve springs
MGB with 18V engines (from October 1971). Identification: top timing mark on front cover
Requires: 8
lower
To October 1971. 18GB to 18GG and 18GK engines
Requires: 8
bottom
MGB with 18V engines (from October 1971). Identification: top timing mark on front cover
Requires: 8
US specification from September 1974
Requires: 1
classic soft material gasket on metal layer with 1.5 mm thickness
Requires: 1
classic copper gasket on metal layer with 1 mm thickness
Requires: 1
classic soft material gasket on metal layer with special sealing ring for the oil feed and 1.2 mm thickness. Please note: do not re-torque cylinder head when using this gasket
Characteristic: do not re-torque cylinder head when using this gasket
Requires: 1
manifold to cylinder head - 1.7/8"
To October 1971. 18GB to 18GG and 18GK engines
Requires: 4
manifold to cylinder head - 1.5/8" long
To October 1971. 18GB to 18GG and 18GK engines
Requires: 2
manifold to cylinder head
October 1971 on, all 18V engines
Requires: 6
for auto choke
US specification from September 1974
Requires: 1
US specification from September 1974
Requires: 1
US specification from September 1974
Requires: 2
with soft material head gasket on metal layer
MGB with twin SU carburettors (1962-80)
Requires: 1
with copper head gasket on metal layer
MGB with twin SU carburettors (1962-80)
Requires: 1
with soft material head gasket on metal layer
MGB with twin SU carburettors (1962-80)
Requires: 1
with modern composite cylinder head gasket with 83.00 mm + 0.5 mm max. bore size
MGB with twin SU carburettors (1962-80)
Requires: 1
with soft material head gasket on metal layer
MGB USA ad Canada Models with single Zentith Stromberg carburettor (1974-80)
Requires: 1
