--- product_id: 12835182 title: "Cummins Onan 122-0645 Oil Filter" brand: "cummins" price: "£21.19" currency: GBP in_stock: true reviews_count: 13 category: "Cummins" url: https://www.desertcart.co.uk/products/12835182-cummins-onan-122-0645-oil-filter store_origin: GB region: United Kingdom --- # Precision 3/4-16 UNC thread size Optimized synthetic & paper filtration Proudly made in the USA Cummins Onan 122-0645 Oil Filter **Brand:** cummins **Price:** £21.19 **Availability:** ✅ In Stock ## Summary > 🛠️ Keep your engine elite with Cummins precision! ## Quick Answers - **What is this?** Cummins Onan 122-0645 Oil Filter by cummins - **How much does it cost?** £21.19 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/12835182-cummins-onan-122-0645-oil-filter) ## Best For - cummins enthusiasts ## Why This Product - Trusted cummins brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Small 3.5 x 3.25 x 3.25 inch dimensions pack big protection. - • **Lightweight Yet Durable:** Ultra-light 0.01 oz filter crafted for efficiency without compromise. - • **Perfect Fit, Zero Hassle:** Vehicle-specific design guarantees seamless installation every time. - • **Trusted American Craftsmanship:** Manufactured in the USA, combining quality and reliability you can count on. - • **Engineered for Peak Performance:** Cummins-grade oil filtration ensures your engine runs smoother, longer. ## Overview The Cummins Onan 122-0645 Oil Filter is a high-performance, vehicle-specific oil filter made from synthetic and paper materials. Compact and ultra-lightweight, it features a precise 3/4-16 UNC thread size and is proudly manufactured in the USA, ensuring reliable engine protection and easy installation. ## Description OIL FILTER - Fits - Emerald and Marquis. Review: Easy - Seem to work as expected Review: Quality shows - If you’re worried about your RV parts failing while you’re out in the boondocks, just buy OEM quality parts. I’ve seen reviews where people have bought cheaper parts and had them fail after a few hours. Quality matters. Sure, some people say it’s just an oil filter and an air filter. But this is an air and oil cooled generator. The environments we are in dusty and dirty as well. Clean oil and clean air mean a longer lasting gennie. ## Features - Product Type:Oil Filter - Item Package Weight:0.27 Kilograms - Item Package Dimension:8.1 cm L X9.3 cm W X9.4 cm H - Country Of Origin: United States ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003ZOIYZ6 | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #96,023 in Automotive ( See Top 100 in Automotive ) #933 in Automotive Replacement Oil Filters | | Brand | Cummins | | Brand Name | Cummins | | Compatible with Vehicle Type | Car | | Customer Reviews | 4.6 out of 5 stars 675 Reviews | | Global Trade Identification Number | 00690781000230 | | Item Dimensions | 3.5 x 3.25 x 3.25 inches | | Item Weight | 0.01 Ounces | | Item dimensions L x W x H | 3.5 x 3.25 x 3.25 inches | | Manufacturer | Cummins | | Manufacturer Part Number | 122-0645 | | Material | Synthetic material or paper | | Material Type | Synthetic material or paper | | Model Number | 122-0645 | | Number of Items | 1 | | OEM Equivalent Part Number | 1220645 | | Part Interchange Info | Replaces: IH-78641-C1, ME-122-0338, WD-900-5025, WD-C26191, WD-C42054 | | Product Grade | Performance Part | | Thread Size | 3/4-16 UNC | | UPC | 690781000230 | | Unit Count | 1.0 Count | | Vehicle Service Type | Car | ## Product Details - **Brand:** Cummins - **Material:** Synthetic material or paper - **Product Grade:** Performance Part - **Vehicle Service Type:** Car - **Item dimensions L x W x H:** 3.5 x 3.25 x 3.25 inches ## Images ![Cummins Onan 122-0645 Oil Filter - Image 1](https://m.media-amazon.com/images/I/81C0EQ9C2KL.jpg) ## Questions & Answers **Q: Is this for a 1996 mh with onan marquis 5000?** A: Not sure but it fits a 2001 Onan Emerald 4000 **Q: does this cross reference to A054X497?** A: Not familiar with number you're trying to cross reference to. When I ordered the Cummins filter to fit my Onan LX790 20hp engine, the box had a label attached referencing to the 1220645 oil filter. The filter I received had different dimensions and the gasket was much narrower than the one's I previously purchased. Through some research I found that the FRAM PH3614 oil filter was a great substitute. I've ran my tractor since last November and the oil is still clean and transparent on the dipstick. When I used the Cummins Filters the oil would have been very dirty and dark on the dipstick by now. I feel the FRAM is a much better choice if it will fit your application. **Q: Does this fit the Onan E140h motors?** A: Probably but not absolutely sure **Q: Will fit wheel horse 416h** A: IDK but the one you need for that machine is 83-283 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy *by E***. on February 23, 2026* Seem to work as expected ### ⭐⭐⭐⭐⭐ Quality shows *by M***H on May 19, 2024* If you’re worried about your RV parts failing while you’re out in the boondocks, just buy OEM quality parts. I’ve seen reviews where people have bought cheaper parts and had them fail after a few hours. Quality matters. Sure, some people say it’s just an oil filter and an air filter. But this is an air and oil cooled generator. The environments we are in dusty and dirty as well. Clean oil and clean air mean a longer lasting gennie. ### ⭐⭐⭐⭐⭐ A little pricey *by H***H on July 31, 2023* Wanted a good oil filter for an ONAN generator. This was an ONAN part number and perfect fit. ## Frequently Bought Together - CUMMINS NW Cummins 1220645 Onan Oil Filter - MOWFILL 140-2628 Air Filter With 140-1496 Pre Filter Replace Onan 140-1228 140-2522 140-2628 140-2628-01 P218G 100941 John Deere AM106953 HE1401228 HE1402522 HE1402628 NN10774 Fits NHA NHB NHC T26 - Cummins 167027299 Onan Spark Plug, (Pack of 2) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/12835182-cummins-onan-122-0645-oil-filter](https://www.desertcart.co.uk/products/12835182-cummins-onan-122-0645-oil-filter) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-23*