Fuel Transfer Pump 326-1006 for Caterpillar CAT Engine C9 Excavator 324D 325D 326D L 328D LCR 329D 330C 330D 336D M325D MH
This fuel pump is engineered as a direct replacement for the Caterpillar CAT Engine C9 Excavator 324D 325D 326D L 328D LCR 329D 330C 330D 336D M325D MH. Manufactured to meet or exceed OEM specifications, it delivers reliable performance in demanding conditions. Each unit is tested for fuel flow, pressure rating, and durability before leaving the factory to ensure consistent quality across every order.
Vehicle Compatibility
| Application | Details |
|---|---|
| Caterpillar | See product specifications |
| CAT Engine C9 Excavator 324D 325D 326D L 328D LCR 329D 330C 330D 336D M325D MH Replace Part Number:CA3261006, 326 | 1006, 3261006, CA1782357, 178-2357, 1782357 Fit for Engine |
| Caterpillar C | 9, C7, C9, 3126E Applications:Fit for follwing models |
| CATERPILLAR ASPHALT PAVER: AP | 1055D, BG-2455D, BG-260D |
| CATERPILLAR CHALLENGER: MTC735 | See product specifications |
| CATERPILLAR EXCAVATOR: 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330C, 330C L, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 340D L, M325D L MH, M325D MH | See product specifications |
| CATERPILLAR FORWARDER: 584 | See product specifications |
| CATERPILLAR INTEGRATED TOOLCARRIER: IT62H | See product specifications |
| CATERPILLAR LANDFILL COMPACTOR: 816F II | See product specifications |
| CATERPILLAR MOBILE HYD POWER UNIT: 324D LN, 325D, 325D L, 329D L, 330C, 330D, 330D L, 336D L | See product specifications |
| CATERPILLAR PETROLEUM PACKAGE: CX31 | C9I |
| CATERPILLAR PETROLEUM TRANSMISSION: TH31 | E61 |
Replaces OEM Part Numbers
CA3261006 • 326-1006 • 3261006 • CA1782357 • 178-2357 • 1782357 • Engine • Caterpillar • 3126E
Signs You Need a Replacement
If your equipment is showing any of these symptoms, the fuel pump may be the cause:
- Engine cranks but won’t start — The pump may have lost prime or stopped delivering fuel. Check for fuel at the filter outlet before replacing the pump.
- Stalling under load — A weak pump can’t maintain pressure at high demand. The engine runs fine at idle but dies when you put it to work.
- Fuel pressure warning (if equipped) — Modern Caterpillar equipment monitors fuel rail pressure. A low-pressure warning often means the pump is failing.
- Loud whining from fuel system — A failing pump makes a high-pitched whine that gets louder as it warms up. Normal pump noise is a low hum.
- Air in fuel lines — If you see bubbles in the transparent fuel line or the primer bulb won’t stay firm, the pump may be drawing air through a worn seal.
- Excessive return flow — Too much fuel returning to the tank instead of reaching the injectors indicates internal pump wear.
Before You Replace the Pump
Before replacing the pump, check the fuel filter and fuel lines for restrictions. A blocked filter causes the same symptoms as a failing pump on Caterpillar equipment. When installing the new pump, fill it with clean fuel before connecting the lines — this reduces priming time and prevents dry-run damage. After installation, bleed the system fully and check for leaks at all connection points. Replace the fuel filter at the same time as the pump to protect the new unit from debris.
Frequently Asked Questions
Will this fit my Caterpillar 324D?
Yes. This part is designed to fit the Caterpillar 324D, 325D, 326D, 328D among other models listed in the compatibility table above. Verify your specific model and engine code before ordering to ensure the correct fit.
Can I cross-reference CA3261006 with 326-1006?
Yes. Both CA3261006 and 326-1006 are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
How do I check if my engine code (CX31, TH31) matches?
The engine code is stamped on a metal tag attached to the engine block, usually near the timing belt cover or on the cylinder head. Compare the code you find with the list above. Engine codes are 3 to 6 characters long.
How long does a Caterpillar fuel pump typically last?
Fuel pump life varies by application, but on Caterpillar equipment you can generally expect 5,000 to 10,000 hours of operation. Running the tank dry, using contaminated fuel, or neglecting the fuel filter are the top causes of premature failure.
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