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SKU:
NLT2T00652
Ships for free in 2–4 business days.
Fuel Primer Pump 172-6291 for Caterpillar 3116 3208 C7 C9 C15 3304B 3306 Diesel Engines
$57.59
In Stock
$57.59
Sale price
$57.59
Regular price
This is a manual fuel primer pump referenced by Caterpillar 172-6291 for multiple Caterpillar diesel engine families.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
| Brand | Model / Engine | Application Notes |
|---|---|---|
| Caterpillar | 3116 / 3208 | Diesel engines |
| Caterpillar | C7 / C9 / C15 | Diesel engines |
| Caterpillar | 3304B / 3306 / 3306B / 3306C | Diesel engines |
Product Overview
The primer pump is used to purge air and refill the low-pressure fuel circuit after filter changes, fuel-system repairs or a run-dry condition. A leaking or worn primer can make the engine difficult to prime and may let air enter the system.
Replacement catalogs list 172-6291 across 3116, 3208, C7, C9, C15, 3304B and 3306-family applications. Since Caterpillar fuel-system arrangements vary widely by engine serial number, the existing pump and engine arrangement number should be checked.
Key Features & Performance
- Manual diesel fuel-primer pump
- Reference 172-6291
- Broad Caterpillar engine-family coverage
- Useful for filter-service priming and air removal from the low-pressure fuel circuit
Technical Specifications
| Part type | Manual fuel primer pump |
|---|---|
| Primary reference | 172-6291 |
| System | Low-pressure diesel fuel priming |
Part Numbers & Cross-References
172-6291
Frequently Asked Questions
What should I verify before ordering?
Confirm engine serial number and primer-pump mounting arrangement before ordering.
Is this an OEM part?
No. This listing is a replacement component. Manufacturer names, model names and reference numbers are used for identification and compatibility; compare the original part and equipment details before ordering.