Caterpillar 7N-2048 Camshaft Bearing
Specifications
| Part type | Camshaft bearing (sleeve bearing / bushing) | |
|---|---|---|
| Engine series fitment | Caterpillar 3508, 3512, 3516 (incl. 3512B diesel) | |
| Bearing construction | Sintered tri-metal: copper/lead and tin base alloy with nickel dam and Babbitt top layer | |
| Function | Supports and locates the camshaft journal within the engine block bore | |
| Alternate materials | Aluminum alloy construction available on request (per CTP) | |
| Aftermarket cross brands | Available as Reliance, CTP, and PAI (PAI 351567) equivalents |
Technical notes
The 7N-2048 is an individual camshaft bearing used across Caterpillar's 3500-series engines, including the 3508, 3512, and 3516 platforms that share the 3512B marine valve-train architecture. It is a sleeve-type insert that supports a camshaft journal in its block bore. Distributor data describes a sintered tri-metal construction — a copper/lead and tin base alloy with a nickel dam and a Babbitt top layer — chosen for higher load-carrying capacity and fatigue resistance than aluminum or plain copper/lead bearings. The bearing is sold individually rather than as a set, so the full camshaft bore count for a given 3512B build determines required quantity. Aftermarket equivalents are offered by Reliance, CTP, and PAI; original Caterpillar 7N-2048 should be specified where genuine fitment is required.
Compliance
Standard internal engine wear component with no specific marine class-society or emissions certification claimed by distributors; verify genuine-vs-aftermarket sourcing against the engine maintenance manual.
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 Caterpillar 7N-2048 camshaft bearing fit the 3512B marine engine?
- Yes. The 7N-2048 is cataloged for the Caterpillar 3508, 3512, and 3516 engines, which share the valve-train design used in the 3512B marine diesel.
- Is 7N-2048 only for spark-ignited gas engines like the G3512?
- No. While it is also listed for the G3508/G3512 gas engines, it is a shared component that fits the 3508/3512/3516 diesel engines, so it is applicable to the 3512B diesel.
- What is the bearing made of?
- Distributor specifications describe a sintered tri-metal bearing with a copper/lead and tin base alloy, a nickel dam, and a Babbitt top layer for improved load capacity and fatigue resistance.
- Is it sold individually or as a set?
- The 7N-2048 is sold as an individual camshaft bearing, so the number required depends on the camshaft bore count of the specific engine.
Caterpillar 7N-2048 Camshaft Bearing
No public pricing — quoted per request