Jaguar XK Cylinder Heads

Jaguar XK Cylinder Heads and Applications

Designation	Color	Application (Engine Prefix)	Valving Intake x Exhaust	Valve Seat Angle Intake x Exhaust	Cam Lift
A1	Silver (Natural)	XK120 (W) Mark VII (A,B,D) 2.4 Saloon (BB)	1 3/4 x 1 7/16	30 x 45	5/16
A	Silver (Natural)	XK120SE (W,F) Mk VIIM (A,D,N) XK 140 (G) 2.4SE (BB,,BC,BE) 150 3.4 (V)	1 3/4 x 1 1/2	30 x 45	3/8
B1	Lt Blue/Green (Eggshell)	3.4 Saloon (KE,KF) Mk VIII (N, NA) XK 150 SE (V) Mk 2 2.4 (BG,BH,BJ) Mk 2 3.4 (KG,KH,KJ) S Type 3.4 (7B)	1 3/4 x 1 5/8	30 x 45	3/8
B	Metallic Blue	Mk IX (NC) XK150 3.8 (VA) Mk 2 3.8 (LA,LB,LC,LE) S Type 3.8 (7B)	1 3/4 x 1 5/8	45 x 45	3/8
C	Red	C Type (E) XK 140 SE(G)	1 3/4 x 1 5/8	30 x 45	3/8
C	Silver (Natural)	C Type (E)	1 7/8 x 1 5/8	30 x 45	3/8
D	Silver (Natural)	D Type 3.4(E)	1 7/8 x 1 5/8	30 x 45	3/8
D Wide Angle	Silver (Natural)	D Type 3.4(E)	1 29/32 x 1 11/16	45 x 45	7/16
D Wide Angle	Silver (Natural)	D Type 3.8(E)	2 x 1 11/16	45 x 45	7/16
D Wide Angle	Silver (Natural)	Ltwt E-Type 3.8	2 3/32 x 1 11/16	45 x 45	7/16
Straight Port (Early)	Gold (Late) or Pumpkin (Early)	XK 150 3.4S(VS) XK 150 3.8S(VAS) Mark X 3.8 (ZA,ZB) E-Type 3.8 (R, RA) Mk X 4.2 (7D) E-Type 4.2 (7E)	1 3/4 x 1 5/8	45 x 45	3/8
Straight Port	Silver (Natural)	420 (7F) 240 (7J) 340 (7J) 420G (7D) E-Type 4.2 Ser II(7R) XJ6 2.8 Ser I(7G) XJ6 4.2 Ser I (7L) XJ6 4.2 Ser II (8L) XJ6 3.4 Ser II (8A) XJ6 3.4 Ser III (8A) XJS 4.2(8S)	1 3/4 x 1 5/8	45 x 45	3/8
Straight Port (Fuel Injection)	Silver (Natural)	XJ6 4.2 Ser III (8L)	1 7/8 x 1 5/8	45 x 45	3/8

Generally, heads will interchange, but the easiest swaps are within generations. Accuracy can't be guaranteed. Please contact author with corrections.