Caterpillar 130-2608 Exhaust Valve Seat Insert
Specifications
| Component type | Cylinder head exhaust valve seat insert | |
|---|---|---|
| Position | Exhaust (one per exhaust valve) | |
| Outside diameter | 2.366 in | |
| Seat angle | 45° | |
| Engine application | Caterpillar 3508 / 3512 / 3516 diesel engines (incl. 3512B) | |
| Engine fuel type | Diesel | |
| Intake counterpart PN | 130-2607 (intake valve seat insert) |
Technical notes
The 130-2608 is the exhaust-side cylinder head valve seat insert used across Caterpillar's 3500-series diesel engines, including the 3512B marine platform. It is a press-fit hardened ring machined to a 45-degree seating angle with a 2.366 in outside diameter, paired in each head with the intake insert 130-2607. Because exhaust seats run hotter and see more thermal and impact loading than intake seats, this insert is a routine replacement item during top-end overhauls and cylinder head reconditioning. Distributor cross-references list legacy numbers 101-1186 and 131-4340 as earlier equivalents. Confirm the bore counterbore dimensions and required interference fit against the engine's service manual before pressing, and verify the part suits the diesel 3512B rather than spark-ignited G3500 gas variants.
Compliance
A non-regulated mechanical engine wear component; fitment should be confirmed against the engine serial number and Caterpillar service documentation before installation.
Compatibility
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Related
●RFQ answered within ~4 h at major hubs routed to vetted suppliers no public pricing
Frequently asked questions
- Does the 130-2608 fit the Caterpillar 3512B marine engine?
- Yes. Distributors list it as fitting the 3508, 3512, and 3516 diesel families, which includes the 3512B variant. Always verify against the specific engine serial number before ordering.
- Is the 130-2608 an intake or exhaust valve seat insert?
- It is the exhaust valve seat insert. The corresponding intake valve seat insert for the same engines is part number 130-2607.
- What are the basic dimensions of the 130-2608 seat insert?
- Distributor data lists an outside diameter of 2.366 inches with a 45-degree seat angle. Confirm the cylinder head counterbore and interference fit against Caterpillar service specs before pressing.
- Does this part fit gas G3500-series engines?
- The corroborated sources list it for the diesel 3508/3512/3516 engines. Spark-ignited G3508/G3512/G3516 gas variants should be verified separately, as gas-engine seat inserts can differ.
Caterpillar 130-2608 Exhaust Valve Seat Insert
No public pricing — quoted per request