CTP Bimetallic & Trimetallic Valves
CTP Engine Valves are manufactured to specifications. The CTP bimetallic operation for the engine valves is extremely important. The valves are welded using a friction-welding machine that merges the two pieces of material (Austenitic on the head and Martensitic on the stem). The process gives the valves a higher resistance to withstand the extreme temperatures of
the engine. This is especially necessary for the exhaust engine valves, which are always stressed by higher temperatures compared to the intake valves.
The valve seats, especially on the exhaust valves, are subject to a chemical and a mechanical corrosion. For this reason, for the CTP trimetallic valves, Stellite (metal alloy) is welded on the seat of the valve to improve
its endurance. The Stellite gives the seat a higher hardness for better resistance to the mechanical stress.
The type of Stellite (cobalt base Stellite) used gives the seat a higher resistance to the chemical corrosion. We emphasize on the concentricity of the bottom of the valve to guarantee the perfect adjustment with the insert.
The measurements of the valves are also verified with a laser instrument to ensure its precision.

Engine Valves:

Engine Model/ Application Part No.
In-Take Valve
Part No. Exhaust
621 7S2514 1S2903
1673 7M7358 9M4163
3046 2335469 2335470
3054 2W6988 7W2522
3066 5I7738 5I7739
3116 1614280 1360819
3116 7W8064 1360819
3208 9L7682 1196772
3208 9L7682 9L7683
3406 1152368 1152367
3408 1220322 1220321
3500 1047184 1047184
3500 7E4609 7E4609
3508 2102542 2102529
1674/6 2S8143 1S2903
3054, 3056 1382052 1382050
3054, 3056 1456855 1382050
3054, 3056 1456855 1456857
3054, 3056 1004626 7W4602
3054, 416B 6I0282 7W4602
Engine Model/ Application Part No.
In-Take Valve
Part No. Exhaust
3054C 1763134 1763137
3054C 2255495 2255499
3066MHI 320C 2128477 5I7739
3116, 3126 N/A 1632432
3126E 1457390 1478211
3126E 2527801 1478211
3204, 910, 953 9N0180 9N0185
3304, 3306 1007860 1487455
3304, 3306 2W2621 8N0875
3306 Gas 7W7490 7W7491
3406E 1528380 1527585
3406E 1537023 1537024
3412C, 3412E, C32 1642543 1642542
3512E 2102542 1944897
416C, 3054 6I1196 7W4602
C10, C12 1929213 1337029
C10, C12 7E9578 1337029
C13 2243028 2243030
C13 2527802 2243030
C4.4 3096678 3096678
C6.4 2941684 2941685
C6.6 3399637 3096678
C9 1632442 1883122
C9 2418382 2418383
D315, D318 6H3026 4F0212
D320 9H4811 2M7727
D342 1W1818 1W1819
D342 8H1993 8H1994
D343, D346 1P0407 7E7830
D353 7M7817 8N3723
D379, D398, D399 1W8606 2W3211
G3306 2W2621 2W2877
G3406 / 8 1227353 1018314
G3408 4W5374 2W2443
G3408C 2120932 2120933

* Other part no. not included in the list are available. Please contact your sales representative if you have any questions.
Part Numbers are used for reference purposes only