Cylinder Head

Indian Bullet Spares Catalogue - Cylinder Head

When ordering parts please quote: Part No. and number required, model, year and country type (Royal Enfield exports the following main country types: Indian, European and USA/Canada). Differences between models are indicated.
The minimum mail order amount ₹4000/$150/€100. If you have any enquiries regarding parts email us.

Cylinder Head - Rocker Assembly

Cylinder Head

Key No.	Part No.	Description	Qty.	Bullet					Mach 350	500	Lightning			T'bird	Remarks
Key No.	Part No.	Description	Qty.	350	Dlx	Mac	Cam	Elec	Mach 350	500	500	535	535ES	T'bird	Remarks
A1	140778	Cylinder Head Assy	1	•	•	•	•	•
	500958	Cylinder Head Assy (Old oil circuit)	1						•						Before June 2002
	500292/A	Cylinder Head Assy (Old oil circuit)	1						•					•	For Mach, After June 2002
	144500	Cylinder Head Assy	1							•	•	•	•	•
A2	141207	Decompressor Assy	1	•	•	•	•	•		•	•
A2	560136	Decompressor Assy	1									•	•
1	111178	Cylinder head with fixed fittings	1	•	•	•	•	•
	500301	Cylinder head with fixed fittings (Old oil circuit)	1						•						Before June 2002
	500291/A	Cylinder head with fixed fittings (New oil circuit)	1						•					•	For Mach, After June 2002
	144159	Cylinder head with fixed fittings	1							•	•	•	•
2	144773	Valve seat insert - Inlet	1	•	•	•	•	•
	500302	Valve seat insert - Inlet	1						•					•
	144775	Valve seat insert - Inlet	1							•	•	•	•
3	144774	Valve seat insert - Exhaust	1	•	•	•	•	•
	500303	Valve seat insert - Exhaust	1						•					•
	144776	Valve seat insert - Exhaust	1							•	•	•	•
4	140008	Stud - Rocker bearing	4	•	•	•	•	•		•	•	•	•
5	140007	Stud - short - Rocker box	6	•	•	•	•	•		•	•	•	•
6	140566	Stud - long - Rocker box	2	•	•	•	•	•		•	•	•	•
7	143285	Stud - Carburetor	2	•	•	•	•	•		•	•	•	•
8	144600	Washer	2	•	•	•	•	•		•	•	•	•
9	140079	Nut - Carburetor Stud	2	•	•	•	•	•		•	•	•	•
10	144836/C	Valve Guide - Standard	2	•	•	•	•	•		•	•	•	•
	500304	Valve Guide - Standard	2						•					•
	140925	Valve Guide 0.003" Oversize	2	•	•	•	•	•		•	•	•	•
	144477	Valve Guide 0.005" Oversize	2	•	•	•	•	•		•	•	•	•
11	144449	Valve Exhaust	1	•	•	•	•	•
	500325	Valve Exhaust	1						•					•
	144498	Valve Exhaust	1							•	•	•	•
12	500322	Seal, Valve Stem	2						•					•
13	140001	Collar - Valve Spring Bottom	2	•	•	•	•	•		•	•	•	•
13	500347	Seat, Spring	2						•					•
14	140004	Valve spring outer	2	•	•	•	•	•
	500309	Valve spring	2						•					•
	142202	Valve spring outer	2							•	•	•	•
15	140003	Valve spring inner	2	•	•	•	•	•
15	142201	Valve spring inner	2							•	•	•	•
16	144443	Collar - Valve spring top	2	•	•	•	•	•		•	•	•	•
16	500352	Retainer, Valve spring	2						•					•
17	140005	Split Collar	4	•	•	•	•	•		•	•	•	•
17	500307	Split Collar	4						•					•
18	144448	Valve Inlet	1	•	•	•	•	•
	500324	Valve Inlet	1						•					•
	144499	Valve Inlet	1							•	•	•	•
19	140006	Valve stem cap	2	•	•	•	•	•		•	•	•	•
20	110081	Nut, Cylinder head (Inches)	1												Before June 2002
	145106/A	Nut, Cylinder head (Metric)	1	•	•	•	•	•							After June 2002
	500320	Nut, Cylinder head	6						•					•
	142203	Nut, Cylinder head (Inches)	4							•	•	•	•		Before July 2002
	145107/A	Nut, Cylinder head (Metric)	4							•	•	•	•		After June 2002
21	140144	Nut, Cylinder head stud (Inches)	2	•	•	•	•	•		•	•	•	•		Before July 2002
21	145112/A	Nut, Cylinder head stud (Metric)	2	•	•	•	•	•		•	•	•	•		After July 2002
22	144600	Washer	2	•	•	•	•	•		•	•	•	•
23	140099	Decompressor valve	1	•	•	•	•	•		•	•	•	•
24	140097	Washer	1	•	•	•	•	•		•	•	•	•
25	140098	Washer	1	•	•	•	•	•		•	•	•	•
26	140867	Decompressor body	1	•	•	•	•	•		•	•	•	•
27	140100	Spring, Decompressor valve	1	•	•	•	•	•		•	•	•	•
28	140101	Spring Cap	1	•	•	•	•	•		•	•	•	•
29	110320	Split pin	1	•	•	•	•	•		•	•	•	•
30	140103	Cable block - Decompressor	1	•	•	•	•	•		•	•	•	•
31	143323	Cable complete, Decompressor	1	•	•	•	•	•
	500506	Cable complete, Decompressor	1						•
	170292	Cable complete, Decompressor	1							•	•	•
	560125/A	Cable complete, Decompressor	1										•
	521010	Cable complete, Decompressor	1											•
32	140936	Washer	1	•	•	•	•	•		•	•	•	•
33	140168	Washer	4	•	•	•	•	•		•	•	•	•
33	500321	Washer	6						•					•
34	144440	Stud, Ground	4	•	•	•	•	•		•	•	•	•
35	500319	Stud, Exhaust	2						•					•
36	500356	Damper Pad Inserts	14						•					•
37	500357/C	Deflector Plate	1						•					•

Rocker Assembly

Key No.	Part No.	Description	Qty.	Bullet					Mach 350	500	Lightning			T'bird	Remarks
Key No.	Part No.	Description	Qty.	350	Dlx	Mac	Cam	Elec	Mach 350	500	500	535	535ES	T'bird	Remarks
A1	141645	Rocker assy kit	1	•	•	•	•	•		•	•
A1	597067	Rocker assy kit	1						•					•
A2	141647	Rocker assy, Exhaust	1	•	•	•	•	•		•	•
A3	141646	Rocker assy, Inlet	1	•	•	•	•	•		•	•
1	140086	Rocker bearing set, Exhaust	1	•	•	•	•	•		•	•
1	144437	Rocker bearing set, Exhaust	1									•	•
2	140084	Rocker bearing set, Inlet	1	•	•	•	•	•		•	•
2	144436	Rocker bearing set, Inlet	1									•	•
3	140089	Rocker Arm, Exhaust	1	•	•	•	•	•		•	•
3	144444	Rocker Arm, Exhaust	1									•	•
4	140088	Rocker Arm, Inlet	1	•	•	•	•	•		•	•
4	144445	Rocker Arm, Inlet	1									•	•
5	140056	Nut	8	•	•	•	•	•		•	•	•	•
6	140090	Washer	8	•	•	•	•	•		•	•	•	•
7	144620	Gasket, Rocker cover	2	•	•	•	•	•		•	•	•	•
7	500318	Gasket, Rocker cover	2						•					•
8	140568	Rocker cover, Exhaust	1	•	•	•	•	•		•	•	•	•
8	500317	Rocker cover, Exhaust	1						•					•
9	140567	Rocker cover, Inlet	1	•	•	•	•	•		•	•	•	•
	500316	Rocker cover, Inlet (Old oil circuit)	1						•						Before July 2002
	500167/A	Rocker cover, Inlet (new oil circuit)	1						•					•	For Mach, After July 2002
10	140133	Nut long Tubular	4	•	•	•	•	•		•	•	•	•
11	140134	Nut Medium Tubular	2	•	•	•	•	•		•	•	•	•
12	140569	Nut short Tubular	2	•	•	•	•	•		•	•	•	•
13	140143	Washer	8	•	•	•	•	•		•	•	•	•
14	144441	Dowel pin	4	•	•	•	•	•		•	•	•	•
15	500315/C	Rocker Spindle (old oil circuit)	2						•						Before July 2002
15	500166/A	Rocker Spindle (new oil circuit)	2						•					•	For Mach, After July 2002
16	500326	Washer, Rocker Thrust	2						•					•
17	500313	Rocker, Inlet	1						•					•
18	500314	Rocker, Exhaust	1						•					•
19	500355	Screw, Rocker cover	8						•					•