Caterpillar 197-6995 Valve Guide
Specifications
| Component type | Exhaust valve guide, standard (STD) size | |
|---|---|---|
| Material | Gray iron (cast) | |
| Nominal bore size | 17.49 mm valve-stem guide bore (per Cat Parts Store listing) | |
| Engine applications | Caterpillar 3508 / 3512 / 3516 series diesel engines | |
| Condition | New | |
| Length (overall, as listed) | approx. 203.2 mm (8 in) per pe-energy listing | |
| Weight (as listed) | approx. 0.42 kg (0.93 lb) per pe-energy listing |
Technical notes
The 197-6995 is a standard-size exhaust valve guide for Caterpillar's 3500-series diesel engines, covering the 3508, 3512 and 3516 families that the 3512B marine engine belongs to. It is a press-fit cast gray-iron guide installed in the cylinder head; the valve stem reciprocates within its 17.49 mm bore, keeping the exhaust valve centered on its seat and conducting heat from the valve stem into the head. Distributors list it specifically as the exhaust (as opposed to intake) guide, supplied new at standard size rather than oversize. It is frequently quoted alongside companion valve-train parts such as guide 133-9306 and is sold individually or in multi-packs for top-end overhauls.
Compliance
This is a Caterpillar OEM-numbered engine internal part with no inherent marine regulatory certification; verify part suitability against the specific engine serial number and Cat service literature before fitment.
Compatibility
Other parts in this series
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- Caterpillar 282-8217 Aftercooler Core
- Caterpillar 299-5204 Piston Assembly
- Caterpillar 313-7770 Fuel Transfer Pump
- Caterpillar 3512B Electronic Unit Injector (EUI)
- Caterpillar 3512B Naval Fuel Control Unit (ECCN 8A609)
- Caterpillar 3512B Turbocharger Cartridge
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- Caterpillar 468-8824 Intake Valve (Inlet Valve)
- Caterpillar 4W-4980 Oil Cooler Core
- Caterpillar 528-8365 Turbocharger Group
- Caterpillar 7C3614 Sea Water Pump
- Caterpillar 7N-2048 Camshaft Bearing
- Caterpillar 7N-3433 Rocker Arm Assembly
- Caterpillar 7W-5455 Bar Type Aftercooler Core
- Caterpillar 7W-6722 Governor / Speed Actuator Assembly
- Caterpillar 8N-2001 Oil Filter Base Assembly
Related
●RFQ answered within ~4 h at major hubs routed to vetted suppliers no public pricing
Frequently asked questions
- Does Caterpillar 197-6995 fit the 3512B marine engine?
- Yes. Distributors list 197-6995 as an exhaust valve guide for the Caterpillar 3508/3512/3516 diesel family, which includes the 3512B marine series. Always confirm against the engine's specific serial-number parts list before ordering.
- Is 197-6995 the intake or the exhaust valve guide?
- It is the exhaust valve guide, supplied new at standard (STD) size. The intake guide carries a different Caterpillar part number.
- What is the guide made of?
- It is a cast gray-iron valve guide with a nominal 17.49 mm valve-stem bore, per the Caterpillar Parts Store listing.
Caterpillar 197-6995 Valve Guide
No public pricing — quoted per request