Pre-combustion chambers are a low-cost component of an engine. During operation, pre-combustion must endure extreme compression forces and temperatures. With time they tend to crack or become loose, causing serious damage to the cylinder head or the block. CTP offers a full line of replacement Pre-combustion chambers for Caterpillar® applications.

Engine Model Part No. Description Glow Plug
3204 4N8809 CHAMBER A 3T8705
3406, 3408, 3412 4N3714 CHAMBER A 3T8705 /
D311, D315, D318 2S1273 CHAMBER 3H2033
D315, D318, 3208 1S1967 CHAMBER A 3H2033
D315, D330 5S1833 CHAMBER 3H2033 /
D318G 1S1970 CHAMBER A 3H2033
D320 2M8590 CHAMBER 3T9562
D320 2M8591 CHAMBER
D330, D333 5S1822 CHAMBER 3T8705
D330C,  D333C, 3304,  3306 5S6795 CHAMBER A 3T8705 /
Engine Model Part No. Description Glow Plug
D333C 8S1522 CHAMBER 3T8705
D339, D342C 2P0483 CHAMBER 3T9562
D342, D342C 2P0484 CHAMBER 3T9562
D343,  1693 8S1523 CHAMBER 3T9562
D346, D348, D349 8N9489 CHAMBER A 3T9562
D346, D348, D349 9S6743 CHAMBER A 3T9562
D353 7S5787 CHAMBER 3T9562 /
D353 8S3617 CHAMBER A 3T9563
D375, D386, D397 5F8265 CHAMBER A
D9H, D353 6N6969 CHAMBER 7L2123

* 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. Cat® and Caterpillar® are registered trademarks of Caterpillar, Inc. Costex Tractor Parts is not affiliated or associated with Caterpillar Inc.