--- product_id: 202418118 title: "547961 514009761 Oil Filler Cap Pumps Pressure Washer with O-Ring" brand: "earthtec" price: "$28.74" currency: USD in_stock: true reviews_count: 8 category: "Earthtec" url: https://www.desertcart.us/products/202418118-547961-514009761-oil-filler-cap-pumps-pressure-washer-with-o store_origin: US region: United States of America --- # Leak-proof O-ring seal Precision fit for Cat pumps Durable ABS plastic build 547961 514009761 Oil Filler Cap Pumps Pressure Washer with O-Ring **Brand:** earthtec **Price:** $28.74 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Upgrade your pressure washer game with a cap that never quits! ## Quick Answers - **What is this?** 547961 514009761 Oil Filler Cap Pumps Pressure Washer with O-Ring by earthtec - **How much does it cost?** $28.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/202418118-547961-514009761-oil-filler-cap-pumps-pressure-washer-with-o) ## Best For - earthtec enthusiasts ## Why This Product - Trusted earthtec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** High-quality ABS plastic resists impact, heat, and deformation under pressure - β€’ **Trusted by Pros:** Highly rated with 4.8 stars and praised for perfect fit and durability - β€’ **Leak-Proof Design:** Integrated O-ring seal ensures zero oil leakage, keeping your pump running clean - β€’ **Perfect Compatibility:** Fits 2SF, 3DX, 3SP Cat pump models flawlessly for hassle-free replacements - β€’ **Effortless Installation:** DIY-friendly cap replacementβ€”no special tools or expertise needed ## Overview The Earthtec Pressure Washer 547961 Oil Filler Cap is a durable, precision-engineered replacement part designed for Cat pump models 2SF, 3DX, and 3SP. Made from impact-resistant ABS plastic and featuring a leak-proof O-ring seal, it ensures a secure fit and prevents oil leakage. Easy to install without special tools, this cap is a must-have for maintaining peak pressure washer performance and longevity. ## Description desertcart.com: Earthtec Pressure Washer 547961 514009761 Oil Filler Cap Replacement 2SF, 3DX, 3SP Pumps Fits for Cat Pump : Patio, Lawn & Garden Review: Fits 4spx , 4dnx25gs1 , ca547961 pumps --- nice replacement part - I change my pressure washer pump oil at regular intervals and I have twisted off two of the plugs made by Cat Pump company . Washer pumps run hot especially if you run them on close to max pressure so the plastic starts to break down under the heat and one twist to many and the threads break off in the hole . That is why I ordered this replacement plug , it fits perfectly . I am posting my pump # 4dnx25gs1.This might help you if you don't have a part # and also for 4spx models Review: Good replacement for a CAT 3GXT30 Pump - Fit perfectly as a replacement for original that had sheared off at last pump oil change. Came with O-Ring as well. Went onto a Cat pump model 3GXT30 (powered by a Subaru Robbin engine model RD80763 sold circa 2009 as a Rigid 3300psi pressure washer). ## Features - Pressure washer 547961 oil filler part# 514009761 547961, fits for 3gxt30 with O-ring seal, replacement for 2SF, 2DX, 3DX, 3SP Cat pumps - The oil fill cap replacement cat pump is made of high quality ABS plastic which is strong, sturdy and resistant to impact and deformation with sealing ring to prevent oil leakage and easy to use to add oil easily - The oil vent cap for power washer is a replacement ensures a tight fit and prevents leakage. If your oil filler cap is damaged, you can just replace it - The cap for cat pressure washer pump parts is simple to install, no need for complex tools to complete the installation, easy DIY - If you have any questions about the 547961 oil filler cap for cat pump, please let us know and we'll be happy to provide a solution! Please carefully compare the model number before purchasing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07JCNXBMD | | Best Sellers Rank | #191,092 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,325 in Pressure Washer Accessories | | Customer Reviews | 4.8 4.8 out of 5 stars (45) | | Is Discontinued By Manufacturer | No | | Item Weight | 0.704 ounces | | Item model number | 547961 | | Package Dimensions | 9.88 x 6.14 x 1.61 inches | ## Images ![547961 514009761 Oil Filler Cap Pumps Pressure Washer with O-Ring - Image 1](https://m.media-amazon.com/images/I/617ZFGaTkGL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits 4spx , 4dnx25gs1 , ca547961 pumps --- nice replacement part *by G***Y on September 9, 2025* I change my pressure washer pump oil at regular intervals and I have twisted off two of the plugs made by Cat Pump company . Washer pumps run hot especially if you run them on close to max pressure so the plastic starts to break down under the heat and one twist to many and the threads break off in the hole . That is why I ordered this replacement plug , it fits perfectly . I am posting my pump # 4dnx25gs1.This might help you if you don't have a part # and also for 4spx models ### ⭐⭐⭐⭐⭐ Good replacement for a CAT 3GXT30 Pump *by J***F on June 29, 2025* Fit perfectly as a replacement for original that had sheared off at last pump oil change. Came with O-Ring as well. Went onto a Cat pump model 3GXT30 (powered by a Subaru Robbin engine model RD80763 sold circa 2009 as a Rigid 3300psi pressure washer). ### ⭐⭐⭐⭐⭐ It fits, as long as the number match up *by K***R on April 15, 2025* I bought this to replace the oil cap that melted when the oil drain plug failed and caused the motor to overheat. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/202418118-547961-514009761-oil-filler-cap-pumps-pressure-washer-with-o](https://www.desertcart.us/products/202418118-547961-514009761-oil-filler-cap-pumps-pressure-washer-with-o) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-11-03*