--- product_id: 6638756 title: "ACDelco GM Original Equipment RC85 (15042975) 15 P.S.I. Radiator Cap" brand: "acdelco" price: "¥5797" currency: JPY in_stock: true reviews_count: 13 category: "Ac Delco" url: https://www.desertcart.jp/products/6638756-acdelco-gm-original-equipment-rc85-15042975-15-p-s-i store_origin: JP region: Japan --- # 15 P.S.I. pressure rating Vehicle-specific GM fit Durable metal construction ACDelco GM Original Equipment RC85 (15042975) 15 P.S.I. Radiator Cap **Brand:** acdelco **Price:** ¥5797 **Availability:** ✅ In Stock ## Summary > 🛠️ Keep your engine cool and your ride flawless with GM’s trusted radiator cap! ## Quick Answers - **What is this?** ACDelco GM Original Equipment RC85 (15042975) 15 P.S.I. Radiator Cap by acdelco - **How much does it cost?** ¥5797 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/6638756-acdelco-gm-original-equipment-rc85-15042975-15-p-s-i) ## Best For - acdelco enthusiasts ## Why This Product - Trusted acdelco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tailored GM Fit:** Engineered specifically for GM vehicles to ensure seamless, factory-perfect installation. - • **Enduring Durability:** Crafted from robust metal for long-lasting reliability under extreme engine conditions. - • **Easy Twist-On Design:** User-friendly closure for quick, secure installation without hassle. - • **OEM-Recommended Quality:** Trusted GM original equipment part guarantees peak performance and peace of mind. - • **Precision Pressure Control:** Maintains optimal 15 P.S.I. pressure to boost coolant boiling point and engine efficiency. ## Overview The ACDelco GM Original Equipment RC85 Radiator Cap is a vehicle-specific, metal-constructed component designed to maintain 15 P.S.I. pressure in the cooling system. It raises the coolant boiling point, ensuring engine efficiency and safety. Recommended by GM as a direct replacement, it offers durable, reliable performance with a convenient twist-on design and backed by a 24-month warranty. ## Description An ACDelco GM Original Equipment Radiator Cap is a spring loaded cap that seals the radiator filler neck or surge tank, and is a GM-recommended replacement for your vehicle’s original component. It maintains pressure on the cooling system while the engine is operating, which raises the boiling point of the engine coolant. It also replenishes the system with coolant from the expansion tank (if equipped) when the engine cools off. This original equipment radiator cap has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Review: Fits and works like new ftom factory - Fit perfect works as described, check your cap , the oring or gasket maybe worn or missing causing major problems, and is only a simple fix Review: Radiator Cap - As described. Perfect fit. Hopefully it does its job over time. ## Features - Seal and maintain pressure on the cooling system for vehicle safety - Raise the boiling point of the engine coolant to maintain efficiency - Fit most models of gm vehicles for expanded coverage - GM recommended replacement part for your gm vehicle’s original factory component - Offering the quality, reliability, and durability of gm oe - Fit type: Vehicle Specific ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000C9S78G | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #25,963 in Automotive ( See Top 100 in Automotive ) #12 in Automotive Replacement Radiator Standard #422 in Automotive Replacement Engine Cooling & Climate Control | | Brand | ACDelco | | Brand Name | ACDelco | | Closure Type | Twist-On | | Color | Black | | Compatible with Vehicle Type | Car | | Customer Reviews | 4.7 out of 5 stars 2,576 Reviews | | Exterior Finish | Stainless Steel | | Global Trade Identification Number | 00021625403168, 20021625403162 | | Included Components | ACDelco - 15 P.S.I. Radia (Slp) (RC85) | | Item Dimensions | 2.5 x 2.4 x 1.5 inches | | Item Type Name | ACDelco - 15 P.S.I. Radia (Slp) (RC85) | | Item Weight | 2.24 ounces | | Item dimensions L x W x H | 2.5 x 2.4 x 1.5 inches | | Manufacturer | AC Delco | | Manufacturer Part Number | 15042975 | | Manufacturer Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. | | Material | Metal | | Material Type | Metal | | Model Number | RC85 | | Number of Items | 1 | | Number of Packs | 1 | | OEM Equivalent Part Number | 15042975 | | Style Name | Safety | | UPC | 021625403168 781761172440 | | Unit Count | 1 Count | | Vehicle Service Type | Car | ## Product Details - **Brand:** ACDelco - **Color:** Black - **Exterior Finish:** Stainless Steel - **Item dimensions L x W x H:** 2.5 x 2.4 x 1.5 inches - **Material:** Metal ## Images ![ACDelco GM Original Equipment RC85 (15042975) 15 P.S.I. Radiator Cap - Image 1](https://m.media-amazon.com/images/I/619IxyK6bmL.jpg) ![ACDelco GM Original Equipment RC85 (15042975) 15 P.S.I. Radiator Cap - Image 2](https://m.media-amazon.com/images/I/61xC2L3XYFL.jpg) ## Questions & Answers **Q: Does it 2015 gmc yukon xl denali** A: Cap Asm-Rad Fil - GM (13502354) **Q: Will this fit an 07 Grand Prix Base?** A: yes **Q: Does it have a spring on it** A: Never be fooled by GM "Original Equipment". It is NEVER the O.E. part that came on your vehicle from the factory. No matter if it is a radiator cap, a fan clutch, a water pump, whatever. If it is labeled/described as a GM "Original Equipment" part, it will either be made in Mexico, China, or sourced from another nonGM affiliated manufacturer, that never manufactured an O.E. part for their vehicles ........just put in a GM Original Equipment box/package, and sold at a very very very inflated price, to another successfully conned customer! **Q: Will this cap fit 2006 Pontiac grand prix** A: I think it don't fit because the Pontiac I believe have expansion tank and the cap is different. GMC savana have the cap rigth at the radiator "neck." ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fits and works like new ftom factory *by T***T on April 18, 2026* Fit perfect works as described, check your cap , the oring or gasket maybe worn or missing causing major problems, and is only a simple fix ### ⭐⭐⭐⭐⭐ Radiator Cap *by M***S on August 27, 2026* As described. Perfect fit. Hopefully it does its job over time. ### ⭐⭐⭐⭐⭐ Great gas cap *by W***N on August 1, 2026* Perfect fit with a great price. ## Frequently Bought Together - ACDelco GM Original Equipment RC85 15 P.S.I. Radiator Cap - ACDelco Professional 252-822 Water Pump Kit - ACDelco Gold 20382S Molded Upper Radiator Hose --- ## 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.jp/products/6638756-acdelco-gm-original-equipment-rc85-15042975-15-p-s-i](https://www.desertcart.jp/products/6638756-acdelco-gm-original-equipment-rc85-15042975-15-p-s-i) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-22*