{"product_id":"dorman-clutch-master-cylinder-cm39903-direct-replace-oem-fit-for-select-honda-acura-restores-pedal-feel","title":"Dorman Clutch Master Cylinder CM39903 — Direct-Replace OEM-Fit for Select Honda \u0026 Acura, Restores Pedal Feel","description":"\u003cstrong\u003eDorman CM39903 is a direct-replacement clutch master cylinder engineered to match original fit and function for select Honda and Acura models from the 1990s and early 2000s.\u003c\/strong\u003e\n\n\u003cp\u003eIf your clutch pedal feels soft, sinks to the floor, or you see fluid where the master cylinder sits, replacing the master cylinder is often the fastest way to restore confident shifting. The Dorman CM39903 is reverse-engineered to mirror the factory unit’s dimensions and mounting points, providing a like-for-like swap for compatible vehicles. It uses durable components engineered for compatibility with standard brake fluid and comes with Dorman’s U.S.-based engineering and quality control oversight.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles does this Dorman clutch master cylinder fit?\u003c\/h3\u003e\n\u003cp\u003eThe CM39903 is designed specifically for a set of late-1990s and early-2000s Honda and Acura models. Fitment depends on model year and trim, so confirming your exact vehicle before ordering is important. Use the vehicle selection (garage) tool to verify compatibility with your VIN or trim level.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAcura Integra: select years 1994–2001\u003c\/li\u003e\n  \u003cli\u003eHonda Civic del Sol: select years 1993–1997\u003c\/li\u003e\n  \u003cli\u003eHonda Civic (various trims): select years 1992–2000\u003c\/li\u003e\n  \u003cli\u003eAlways confirm trim\/year using the product fitment tool\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this replacement compare to the original equipment?\u003c\/h3\u003e\n\u003cp\u003eDorman’s CM39903 is crafted from measurements and specifications derived from the original part to ensure correct geometry, port locations, and mounting. That means installation typically follows the same steps as the factory unit without modification. The internal seals and exterior fittings are built to provide compatible performance with your vehicle’s hydraulic clutch system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReverse-engineered to match OEM dimensions and ports\u003c\/li\u003e\n  \u003cli\u003eDirect-mount design for bolt-on replacement\u003c\/li\u003e\n  \u003cli\u003eSealing and materials formulated for standard brake fluid use\u003c\/li\u003e\n  \u003cli\u003eMeant to restore pedal feel and hydraulic pressure similar to factory\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation generally requires basic hand tools and bleeding the clutch hydraulic system afterward to remove air. Follow vehicle-specific procedures for safe removal and installation: support the vehicle, disconnect lines carefully, and avoid introducing contaminants into the fluid. After installing the new master cylinder, properly bleeding ensures consistent pedal travel and engagement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBasic hand tools and a brake-fluid-safe container for flushing\u003c\/li\u003e\n  \u003cli\u003eBleed clutch after installation to eliminate trapped air\u003c\/li\u003e\n  \u003cli\u003eInspect lines and slave cylinder for wear while replacing the master\u003c\/li\u003e\n  \u003cli\u003eDispose of old fluid according to local regulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key features and durability expectations?\u003c\/h3\u003e\n\u003cp\u003eThe CM39903 uses robust rubber sealing components and corrosion-resistant surfaces to withstand typical under-hood environments. While no aftermarket part can promise indefinite life, Dorman provides quality control oversight and engineering support to help the part meet or closely match the longevity of the original unit when installed and maintained correctly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-grade rubber seals compatible with standard DOT brake fluid\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined interfaces to reduce leakage risk\u003c\/li\u003e\n  \u003cli\u003eManufactured with U.S.-based engineering validation\u003c\/li\u003e\n  \u003cli\u003eIntended as a direct substitute for the OEM master cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Dorman CM39903 is aimed at DIY mechanics, independent repair shops, and owners of compatible Acura Integra, Honda Civic del Sol, and Honda Civic models who need a reliable direct-replacement clutch master cylinder. If your vehicle’s clutch pedal is spongy, drops under pressure, or you observe hydraulic fluid loss at the master cylinder, this unit offers a factory-style replacement option — just confirm year and trim with the fitment tool before purchasing.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install the CM39903 myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, a competent DIYer can install it; basic tools and proper clutch bleeding are required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this part require a specific brake fluid?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use the manufacturer-recommended DOT brake fluid; the part’s seals are compatible with standard fluids.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":48082894520478,"sku":"B001PYCINM","price":54.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dorman-cm39903-front-view.jpg?v=1785818599","url":"https:\/\/northtrailauto.ca\/products\/dorman-clutch-master-cylinder-cm39903-direct-replace-oem-fit-for-select-honda-acura-restores-pedal-feel","provider":"North Trail Auto","version":"1.0","type":"link"}