--- product_id: 154927786 title: "labwork Cast Aluminum Coolant Flange Upgrade Kit Replacement for 1J0121087E | Replacement for Golf Mk4 Mk4 1.8T TT 2000-2005" brand: "labwork" price: "178.64 DT" currency: TND in_stock: true category: "Labwork" url: https://www.desertcart.tn/products/154927786-labwork-cast-aluminum-coolant-flange-upgrade-kit-replacement-for-1j0121087e store_origin: TN region: Tunisia --- # Complete kit with all essential hardware included Durable cast aluminum for superior heat dissipation Precision fit for Golf/Jetta/TT Mk4 1.8T (2000-2005) labwork Cast Aluminum Coolant Flange Upgrade Kit Replacement for 1J0121087E | Replacement for Golf Mk4 Mk4 1.8T TT 2000-2005 **Brand:** labwork **Price:** 178.64 DT **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your Mk4’s cooling game—because your engine deserves elite care! ## Quick Answers - **What is this?** labwork Cast Aluminum Coolant Flange Upgrade Kit Replacement for 1J0121087E | Replacement for Golf Mk4 Mk4 1.8T TT 2000-2005 by labwork - **How much does it cost?** 178.64 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/154927786-labwork-cast-aluminum-coolant-flange-upgrade-kit-replacement-for-1j0121087e) ## Best For - labwork enthusiasts ## Why This Product - Trusted labwork brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-in-One Upgrade Kit:** Includes coolant flange, thermostat housing cover, sensor O-rings, screws, and washers for hassle-free installation. - • **Optimized Cooling Flow:** Precision-engineered coolant pathways improve engine temperature regulation and longevity. - • **Tool-Free Installation:** Designed for quick, straightforward installation using conventional tools—get back on the road faster. - • **Seamless OEM Compatibility:** Direct replacement for multiple OEM part numbers ensuring perfect fit and function. - • **Premium Cast Aluminum Build:** Engineered for enhanced durability and optimal cooling performance under high stress. ## Overview The labwork Cast Aluminum Coolant Flange Upgrade Kit is a precision-engineered replacement part designed for Golf Mk4, Jetta Mk4, and TT 1.8T models from 2000-2005. Crafted from durable cast aluminum, this kit includes all necessary components for a seamless installation, enhancing your vehicle’s cooling efficiency and reliability with OEM-level fitment. ## Description Buy labwork Cast Aluminum Coolant Flange Upgrade Kit Replacement for Golf Mk4 Jetta Mk4 1.8T TT 2000-2005 1J0121087E: Thermostat Housings - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Fitment: Replacement for Golf Mk4 1.8T 2000-2005, replacement for Jetta Mk4 1.8T 2000-2005, replacement for TT 2000-2002 - Replacement Part number: 06A121121C, 06A121121F, 1J0121087C, 1J0121087E, 06A121132AP, 06A121132AH - Feature: The coolant enters the water pump through the sewer tube of the water tank, and then enters the engine through the water pump for cooling - Easy to install: The installation process of our products is simple and convenient, and does not require special tools, usually requires conventional tools to complete, saving your installation time - Package includes: 1 x Cooling Hose Flange 1 x Coolant T Joint 1 x Thermostat Housing Cover 1 x Rubber O-Ring for Block Flange 1 x Coolant Temperature Sensor O-Ring 2 x Screws 2 x Washers (As the picture shows) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07WJRHWZN | | Best Sellers Rank | #427,473 in Automotive ( See Top 100 in Automotive ) #576 in Automotive Replacement Engine Thermostat Housings | | Brand | labwork | | Customer Reviews | 4.5 4.5 out of 5 stars (89) | | Date First Available | August 14, 2019 | | Item Weight | 1.14 pounds | | Item model number | 06A121121C | | Manufacturer | labwork | | Manufacturer Part Number | 06A121121C | | Model | Cast Aluminum Coolant Flange Upgrade Kit | | OEM Part Number | 06A121121C, 06A121121F, 1J0121087C, 1J0121087E, 06A121132AP, 06A121132AH | | Package Dimensions | 8.27 x 5 x 3.27 inches | ## Images ![labwork Cast Aluminum Coolant Flange Upgrade Kit Replacement for 1J0121087E | Replacement for Golf Mk4 Mk4 1.8T TT 2000-2005 - Image 1](https://m.media-amazon.com/images/I/61wx55LuHdL.jpg) ## Frequently Bought Together - labwork Cast Aluminum Coolant Flange Upgrade Kit 1J0121087E Replacement for 2000-2005 Golf Mk4 Jetta Mk4 1.8T TT - MOCW 06A103213F Engine Crankcase Breather Hose Fit for Jetta for Audi VW 1.8T MK4 (8Pieces) - PIT66 Silicone Radiator Hose Kit,Compatible with 99-06 Volkswagen Golf MK4 1.8T Turbo Black with Clamps --- ## 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.tn/products/154927786-labwork-cast-aluminum-coolant-flange-upgrade-kit-replacement-for-1j0121087e](https://www.desertcart.tn/products/154927786-labwork-cast-aluminum-coolant-flange-upgrade-kit-replacement-for-1j0121087e) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-09*