--- product_id: 136726185 title: "3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap" brand: "road king truck parts" price: "฿4210" currency: THB in_stock: true reviews_count: 4 url: https://www.desertcart.co.th/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel store_origin: TH region: Thailand --- # 3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap **Brand:** road king truck parts **Price:** ฿4210 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** 3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap by road king truck parts - **How much does it cost?** ฿4210 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel) ## Best For - road king truck parts enthusiasts ## Why This Product - Trusted road king truck parts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description 3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap ## Features - About this item - Please measure the diameter of your current fuel cap or fuel tank fill tube prior to ordering One 3 3/8” diameter, aluminum locking diesel fuel cap, each lock keyed different Female fitting, Vented, 8 TPI NPSL, for diesel application only Includes rubber gasket seal, safety chain, and bail. Supplied with 2 matching keys (keys are not available separately) Approximate dimensions = Across threads cap 3 3/8”, Across threads filler neck 3 7/16” ›See more product details ## Images ![3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap - Image 1](https://m.media-amazon.com/images/I/71orbQ2+IiL.jpg) ![3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap - Image 2](https://m.media-amazon.com/images/I/816QmOPrnZL.jpg) ![3 1/2” Nominal 8 TPI Locking Aluminum Diesel Fuel Cap - Image 3](https://m.media-amazon.com/images/I/81bQa++2hxL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect Solution to prevent theft *by J***I on Reviewed in the United States on June 6, 2022* The locks are wonky and don't let the keys out when the lock is in the unlocked position, but for the price, it's a small inconvenience to deal with when the peace of mind knowing your fuel is safe from theives. ### ⭐⭐⭐⭐⭐ No leaks *by C*** on Reviewed in the United States on June 6, 2022* Fits just right ### ⭐⭐⭐ Wrong item received *by G***E on Reviewed in the United States on April 12, 2022* 2 times received wrong size. But its good product if you r lucky to get proper size --- ## 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.th/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel](https://www.desertcart.co.th/products/136726185-3-1-2-nominal-8-tpi-locking-aluminum-diesel-fuel) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-29*