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SPM-HEP-4891 is the hydraulically actuated (HEUI type) fuel injector with a yellow solenoid cap and two pin connector, a hold down flange with two bolt holes, red and black O rings and a black nozzle body. It is used on Caterpillar C9 engines (330D, 340D, 140M). This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
It replaces Caterpillar 20R-8968, Caterpillar 557-7633 and Caterpillar 20R-8064.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Fuel Injector |
| Replaces | Caterpillar 20R-8968 |
| Injector type | Hydraulically actuated electronic (HEUI type) |
| Engine | Caterpillar C9 |
| Machine | Caterpillar 330D, 340D, 140M, 14L, 160M, 2390, 2491 |
| Cross references | Caterpillar 557-7633, Caterpillar 20R-8064 |
| Fits | the Caterpillar C9 diesel engine, including the 330D and 340D excavators, 140M, 14L and 160M motor graders and 2390 and 2491 feller bunchers |
| Condition | New, aftermarket |
| Stat. HS-Code | 840999 |
| Country of Manufacture | China |
Machines
Check the part number on your old unit before ordering.
| Caterpillar Part No.(SPM Part No.) | Fits |
|---|---|
| 20R-8968 / Caterpillar 557-7633 / Caterpillar 20R-8064(SPM-HEP-4891) | the Caterpillar C9 diesel engine, including the 330D and 340D excavators, 140M, 14L and 160M motor graders and 2390 and 2491 feller bunchers |
| Brand | Part No. |
|---|---|
| Caterpillar | 20R-8968 |
| Caterpillar | 557-7633 |
| Caterpillar | 20R-8064 |
All of these numbers are the same part.
What it does
It sprays a metered charge of fuel into the cylinder at the right moment. Spray pattern and opening pressure decide how cleanly the engine burns its fuel.
Where it is used
Made for the Caterpillar C9 diesel engine, including the 330D, 340D excavators, 140M and 4 more. The full list is in the tables above.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (5 aftermarket sellers) | USD 330.50 to 346.99 | 1 Nov 2026 |
| SINOCMP | USD 369.00 | 1 Nov 2026 |
| Buy Machinery Parts | USD 424.50 | 1 Nov 2026 |
| FridayParts | USD 445.73 | 1 Nov 2026 |
| Fab Heavy Parts | USD 467.71 | 1 Nov 2026 |
| WDPart | USD 658.00 | 1 Nov 2026 |
| Diselmart | USD 765.00 | 1 Nov 2026 |
| Spare Part Mart | USD 264.40 | Today |
Our price of USD 264.40 is 20% to 65% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes, it was made for the Caterpillar C9 diesel engine, and 7 more listed under compatible equipment. Check the old fuel injector is marked 20R-8968 or one of the cross references, because makers change parts between serial ranges.
On the Caterpillar C9 diesel engine, often 5,000 to 10,000 hours, but much less on poor or wet fuel. Injectors are usually changed when they fail a test, not by hours.
Black or white smoke, a misfire or knock on one cylinder, hard starting, higher fuel use, or a high return leak or balance rate on test.
Clean the bore and seat of carbon, and keep the nozzle capped until it goes in. Torque the clamp to the engine manual, not by feel.
Always. Fit a new copper washer and O-rings under every injector you remove. A reused washer leaks combustion gas and carbon packs the bore.
No. It is an aftermarket fuel injector made to replace the Caterpillar 20R-8968. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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