Caterpillar 212-8176 Water Pump
Specifications
| OEM | Caterpillar (212-8176 / 2128176); commonly supplied as new aftermarket (CTP brand) | |
|---|---|---|
| Part type | Engine jacket-water (coolant) pump group — PUMP GP-WATER | |
| Engine application | 3500-series: 3508/3508B/3508C, 3512/3512B/3512C, 3516B, plus G3508/G3512 and PM3508 (per Atomic Parts & Supply) | |
| Cross-reference / supersession | Listed by Propel Parts as 2W9725 / 2W9726; Diesel Parts Direct lists supersession chain 122-0501, 122-3371, 166-4377, 2W-9725, 8N-380 | |
| Weight | 49.00 lb (22.23 kg) per Propel Parts and Atomic Parts & Supply | |
| Shipping dimensions | 18.90 x 16.54 x 13.78 in (per Propel Parts) | |
| Condition options | New aftermarket; no core charge (Propel Parts) |
Technical notes
The 212-8176 is the engine jacket-water (coolant) pump group for Caterpillar 3500-series engines, circulating coolant through the block and heads to the heat exchanger/radiator on the 3512B and related 3508/3512/3516 platforms. It is the gear-driven freshwater (closed-loop) pump, not the auxiliary or raw/sea-water pump, so confirm whether your marine engine uses a separate raw-water pump. Distributors list cross-references 2W9725/2W9726 (Propel Parts) and an older supersession chain including 122-0501, 122-3371, 166-4377 and 8N-380 (Diesel Parts Direct), so a unit may arrive under a current part number. Because Cat used several water-pump groups across 3500 variants and applications (trucks, excavators, gensets, marine), verify fitment against the engine serial number / Cat SIS before ordering. Sold new aftermarket (CTP brand); genuine Cat units available on request.
Compliance
Material certification and OEM traceability/genuine-Cat sourcing available on request; aftermarket units are supplied to OEM specification with distributor warranty.
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 212-8176 fit the 3512B marine engine?
- Yes. Distributors list it for the 3508/3512/3516 family including the 3512B (Propel Parts explicitly lists 3508/3508B/3508C/3512/3512B/SR4; Atomic Parts & Supply adds 3512C, 3516B, G3508, G3512 and PM3508). Always confirm against your engine serial number / Cat SIS before ordering.
- Is this the freshwater pump or the raw/sea-water pump?
- 212-8176 is the engine jacket-water (closed-loop coolant) pump group, listed as PUMP GP-WATER. On a marine 3512B with a separate auxiliary seawater pump, this part does not replace the raw-water pump — verify which pump you need.
- Are genuine Caterpillar units available, or only aftermarket?
- The corroborating listings are new aftermarket (CTP brand); Diesel Parts Direct notes its DS-prefixed parts are not genuine. Genuine Cat 212-8176 can be sourced on request, with traceability documentation available.
Caterpillar 212-8176 Water Pump
No public pricing — quoted per request