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SKU:
NLT2T01964
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Fuel Primer / Water Separator Pump Assembly for Cat Backhoes & D3G-D5G – 228-9129
$61.69
In Stock
$61.69
Sale price
$61.69
Regular price
This assembly matches Caterpillar 228-9129 and combines fuel priming with the filter/water-separator mounting arrangement used on supported Cat backhoes and D3G, D4G and D5G tractors.
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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
| Application | Models / Details |
|---|---|
| Cat backhoe loaders | 414E, 416D/E, 420D/E, 422E, 424D, 428D/E, 430D/E, 432D/E, 434E, 442D/E, 444E on applicable serial ranges |
| Cat track-type tractors | D3G, D4G, D5G applications using 228-9129 |
Product Overview
This is more than a generic “fuel pump.” Caterpillar identifies 228-9129 as a fuel-pump primer and primer-filter assembly with water separation. The hand-primer side helps refill and bleed the low-pressure fuel circuit after filter service or loss of prime, while the separator/filter portion helps remove water and contamination before fuel reaches sensitive injection components.
Cat application data places 228-9129 on multiple D-series backhoe loaders as well as D3G/D4G/D5G tractors. Because fuel-system arrangements can vary by machine serial number, the Cat part reference should be checked in the machine’s parts system.
Key Features & Performance
- Fuel primer and filter/water-separator assembly rather than a simple standalone electric fuel pump
- Caterpillar reference 228-9129
- Supports manual priming/bleeding after fuel-system service
- Used on supported Cat backhoe loaders and D3G/D4G/D5G tractors
Specifications & Reference Numbers
- Part number: 228-9129
- Component: Fuel primer / primer-filter with water separator
- Approx. catalog dimensions: Length 13.3 in.; height 5.3 in. on Caterpillar listing
Before You Order
Use the machine serial number and Caterpillar parts lookup to confirm 228-9129. Also inspect the fuel lines, seals, filter element and water bowl/hardware that interface with the assembly.
Frequently Asked Questions
Q: Is 228-9129 just a lift pump?
A: No. Caterpillar describes it as a fuel-pump primer and primer-filter assembly with water-separator function.
Q: When is the primer used?
A: It is used to refill and purge air from the low-pressure fuel circuit after service or when the system has lost prime.