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Caterpillar 418-3229 is the Denso type electronic common rail injector with a top two stud terminal, a black T shaped body with a capped side high pressure inlet, a blue O ring and a slim nozzle. It is used on Caterpillar C4.4 engines (312F to 318F excavators). This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
The same part is also sold as Denso 295050-1810.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Common Rail Fuel Injector |
| Replaces | Denso 295050-1810 |
| Injector type | Electronic common rail |
| Engine | Caterpillar C4.4 |
| Machine | CAT 312F, 313F, 315F, 316F, 318F, D3K2, D5K2, 910M, 914M, 918M |
| Cross references | Caterpillar 418-3229 |
| Fits | the Caterpillar C4.4 diesel engine in 312F, 313F, 315F, 316F and 318F excavators, D3K2 and D5K2 dozers, 910M to 918M wheel loaders and 416F2 to 450 backhoe loaders |
| Condition | New, aftermarket |
| Stat. HS-Code | 840999 |
| Country of Manufacture | China |
Machines
Check the part number on your old unit before ordering.
| Denso Part No.(SPM Part No.) | Fits |
|---|---|
| 295050-1810 / Caterpillar 418-3229(SPM-HEP-4866) | the Caterpillar C4.4 diesel engine in 312F, 313F, 315F, 316F and 318F excavators, D3K2 and D5K2 dozers, 910M to 918M wheel loaders and 416F2 to 450 backhoe loaders |
| Brand | Part No. |
|---|---|
| Denso | 295050-1810 |
| Caterpillar | 418-3229 (this page, SPM-HEP-4866) |
All of these numbers are the same part.
What it does
A common rail injector opens electrically several times per combustion stroke, spraying fuel at very high pressure. Its timing and flow are set by the engine controller using the trim code on its body.
Where it is used
Made for the Caterpillar C4.4 diesel engine in 312F, 313F, 315F, 316F and 5 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 (6 aftermarket sellers) | USD 111.11 to 122.06 | 1 Nov 2026 |
| SINOCMP | USD 179.00 | 1 Nov 2026 |
| FridayParts | USD 186.90 | 1 Nov 2026 |
| Fab Heavy Parts | USD 199.36 | 1 Nov 2026 |
| Yem Parts | USD 224.93 | 1 Nov 2026 |
| Buy Machinery Parts | USD 256.93 | 1 Nov 2026 |
| Spare Part Mart | USD 93.78 | Today |
Our price of USD 93.78 is 16% to 63% 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 is a direct replacement for the Caterpillar 418-3229 with the same fitting.
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.
Not always. If the others pass a return leak or balance test, one can be changed. Where they are all high hours, a full set keeps the cylinders even.
No. It is an aftermarket fuel injector made to replace the Caterpillar 418-3229. 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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