Fitment and Service Notes
The 1R-1808 is the advanced-efficiency spin-on oil filter for a very wide slice of the Caterpillar engine range: 3406B/C/E, 3408 and 3412 series, the C7–C18 ACERT line, C27/C32, 3176/3196 and the 3508/3512 industrial engines. On machines, that covers the 336D/336E, 345B/C/D, 349D and 330B/C/D excavators as well as D6 track-type tractors. If you run 3412-powered generators or C15-powered mining trucks, this is the same element family — confirm the engine serial and we match it.
Two things matter when you order. First, the number: 1R-1808 supersedes the older 275-2604, and aftermarket sellers list LF691A (Baldwin), B7299, 1W-2660, 249-2347, 3I-1284 and 1R-0716 as interchangeable. Second, the genuine check: on genuine Cat elements, "AGS" is stamped into the bottom of the can. We supply high-quality aftermarket elements cross-referenced to the OEM number, typically 40–60% below genuine Cat pricing, and we confirm fitment by engine serial before dispatch.
Machines Using the 1R-1808
| Machine type | Models |
|---|---|
| Hydraulic excavators | 336D, 336E, 345B, 345C, 345D, 349D, 330B, 330C, 330D |
| Track-type tractors | D6 series (D6D/D6E/D6H/D6R builds per engine) |
| Engines (stationary / genset / truck) | 3406, 3408, 3412, C9, C13, C15, C18, C27, C32 |
US aftermarket listings for a 1R-1808 equivalent typically price well below the genuine Cat element (multipack deals bring the per-unit cost down further — checked August 2026). For fleet or regular PM programs, we quote FOB Shanghai pricing on scheduled quantities — message us with your engine list and annual consumption.
FAQ
Q: Does the 1R-1808 oil filter fit my Cat C15 or 3412 engine?
A: Yes — it fits 3406B/C/E, 3408 and 3412 series, C7/C9/C10/C11/C12/C13/C15/C16/C18, C27/C32, 3176, 3196 and 3508/3512 engines (ACERT builds included). On machines it covers 336D/336E, 345B/C/D and 349D excavators and the D6 dozer range. Confirm with your engine serial before ordering.
Q: What is the difference between Cat Advanced Efficiency and standard oil filters?
A: Cat Advanced Efficiency (AE) filters use higher-efficiency media that traps finer wear particles than standard filters, keeping the lubrication system cleaner and extending component life on ACERT and high-hour engines. The 1R-1808 is the AE spin-on for the 3406/C9–C18 engine family.
Q: What part numbers interchange with 1R-1808?
A: Documented cross-references include Caterpillar 275-2604, Baldwin LF691A, B7299, plus 1W-2660, 249-2347, 3I-1284 and 1R-0716 listed by aftermarket sellers. We supply a high-quality aftermarket element cross-referenced to the OEM number and confirm fitment by engine serial.
Q: How do I order this oil filter from CN Machinery?
A: Message us on WhatsApp or email sales@cn-machinery.com with your engine model and serial number. Stock items dispatch in 3–7 days, FOB Shanghai or CIF to your port, with payment by T/T.
Need This Oil Filter for Your Cat Engine?
Send your engine serial and the number on your old element — we confirm fitment, quote a price and arrange shipping within 24 hours.
Chat on WhatsApp Email sales@cn-machinery.com