--- product_id: 52904088 title: "Derale 25782 Thermostatic Sandwich Adapter Kit" brand: "derale" price: "€ 125.99" currency: EUR in_stock: true reviews_count: 2 category: "Derale" url: https://www.desertcart.pt/products/52904088-derale-25782-thermostatic-sandwich-adapter-kit store_origin: PT region: Portugal --- # Derale 25782 Thermostatic Sandwich Adapter Kit **Brand:** derale **Price:** € 125.99 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Derale 25782 Thermostatic Sandwich Adapter Kit by derale - **How much does it cost?** € 125.99 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/52904088-derale-25782-thermostatic-sandwich-adapter-kit) ## Best For - derale enthusiasts ## Why This Product - Trusted derale brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Derale's most versatile sandwich adapter kit offered and is designed to install on 90 per cent of the passenger vehicles on the road today. This universal kit includes an 180 degree F thermostatic sandwich adapter with 3/8 inch NPT ports and fits oil filter landings from 2 3/4 inch up to 3 1/2 inch diameters, this adapter provides external oil lines to allow the addition of an engine oil cooler. It installs between the stock engine oil filter landing and the oil filter. Stock filter is retained. Review: Poorly engineered device :-( - First, the good things: it comes with several adapters, seals, and clear instructions, and the price is decent. However, I won't be installing this product on any vehicle, ever. First, the mating surface on the filter side has a very rough finish, it was cut too fast. Next, the cavity for the thermostat extends on the filter's O-ring path, meaning the filter sealing area is cut in half (I users a genuine Ford Motorcraft FL-910S filter) so chances are there will be a leak between the filter and the sandwich plate. This is a fatal engineering defect. The tip of the thermostat spring blade touches the housing and being spring steel, scrubs into the alloy material, and creates debris. Next, the area where the sleeve nut mates with the sandwich adapter is not machined, and not flat as it's straight from the casting: the nut cuts into the alloy and grinds material creating debris as it gets tightened, and the steel sleeve nuts itself contain machining debris, presumably from cutting the inner thread. The port's thread is not deep enough: I tried to install 10AN flares, male to 3/8 NPT male, and I can not screw them all the way in because the fully cut thread in the ports does not extend deep enough. Last the sleeve nuts uses an unusual dimension, all 10AN fittings (typical for oil cooler lines) use a 1" hex nut but for some gratuitous reason those sleeves come in 1 1/8" In conclusion, this is a poorly engineered device, the filter seal does not mate to a smooth surface and actually mates against the thermostat cavity in the housing, halving the sealing surface in two points and making sealing uncertain, the thermostat is questionable, and there is debris everywhere. You cannot use standard 3/8 NPT fittings, and you need a special wrench. Review: then would be perfect! - Installed for my 240sx oil cooler, seems to work well, only wish it has an oil temp sensor threaded hole, then would be perfect! ## Features - Provides external oil lines for oil coolers without relocating the factory oil filter - Cast form high quality aluminum - Maintain factory equivalent oil filter - Type A Sandwich Adapter with 3/4 inch-16, 13/16 inch-16, 18 x 1.5mm, 20 x 1.5mm, and 22 x 1.5mm thread sizes, fits most applications ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004XOQ7ME | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #4,744,615 in Automotive ( See Top 100 in Automotive ) #8,980 in Automotive Replacement Engine Thermostats | | Brand | Derale | | Brand Name | Derale | | Compatible with Vehicle Type | Car | | Customer Reviews | 3.2 out of 5 stars 3 Reviews | | Exterior Finish | Per Item Description | | Fit Type | Vehicle Specific | | Global Trade Identification Number | 00083277257827 | | Included Components | Per Item Description | | Item Type Name | Thermostatic Sandwich Adapter | | Item Weight | 2.3 Pounds | | Manufacturer | Derale | | Manufacturer Part Number | 25782 | | Manufacturer Warranty Description | Limited One Year | | Model Number | 25782 | | OEM Equivalent Part Number | 25782 | | Part Interchange Info | 25782 | | Product Grade | like new | | UPC | 083277257827 | | Unit Count | 1.0 Count | | Vehicle Service Type | Car | ## Product Details - **Brand:** Derale - **Exterior Finish:** Machined - **Vehicle Service Type:** Car - **Item Weight:** 2.5 Pounds - **Product Grade:** like new ## Images ![Derale 25782 Thermostatic Sandwich Adapter Kit - Image 1](https://m.media-amazon.com/images/I/71+7bd3JL8L.jpg) ## Customer Reviews ### ⭐ Poorly engineered device :-( *by A***N on June 20, 2020* First, the good things: it comes with several adapters, seals, and clear instructions, and the price is decent. However, I won't be installing this product on any vehicle, ever. First, the mating surface on the filter side has a very rough finish, it was cut too fast. Next, the cavity for the thermostat extends on the filter's O-ring path, meaning the filter sealing area is cut in half (I users a genuine Ford Motorcraft FL-910S filter) so chances are there will be a leak between the filter and the sandwich plate. This is a fatal engineering defect. The tip of the thermostat spring blade touches the housing and being spring steel, scrubs into the alloy material, and creates debris. Next, the area where the sleeve nut mates with the sandwich adapter is not machined, and not flat as it's straight from the casting: the nut cuts into the alloy and grinds material creating debris as it gets tightened, and the steel sleeve nuts itself contain machining debris, presumably from cutting the inner thread. The port's thread is not deep enough: I tried to install 10AN flares, male to 3/8 NPT male, and I can not screw them all the way in because the fully cut thread in the ports does not extend deep enough. Last the sleeve nuts uses an unusual dimension, all 10AN fittings (typical for oil cooler lines) use a 1" hex nut but for some gratuitous reason those sleeves come in 1 1/8" In conclusion, this is a poorly engineered device, the filter seal does not mate to a smooth surface and actually mates against the thermostat cavity in the housing, halving the sealing surface in two points and making sealing uncertain, the thermostat is questionable, and there is debris everywhere. You cannot use standard 3/8 NPT fittings, and you need a special wrench. ### ⭐⭐⭐⭐ then would be perfect! *by D***M on June 15, 2015* Installed for my 240sx oil cooler, seems to work well, only wish it has an oil temp sensor threaded hole, then would be perfect! --- ## 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.pt/products/52904088-derale-25782-thermostatic-sandwich-adapter-kit](https://www.desertcart.pt/products/52904088-derale-25782-thermostatic-sandwich-adapter-kit) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-06*