{"product_id":"miliparts-main-relay-assembly-for-honda-acura-39400-s84-003-direct-fit-replacement-complete-assembly","title":"MILIPARTS Main Relay Assembly for Honda\/Acura 39400-S84-003 — Direct-Fit Replacement, Complete Assembly","description":"\u003cp\u003e\u003cstrong\u003eMILIPARTS Main Relay Assembly is a direct-fit replacement relay engineered to restore electrical control to select Honda and Acura models using OE reference 39400-S84-003.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your vehicle exhibits intermittent starting, accessory power loss, or electrical control faults related to the main relay, this MILIPARTS unit is designed to match the original fit, form, and function for a reliable repair. It fits a range of late-1990s and early-2000s Honda and Acura models and ships as a complete assembly for straightforward installation. Below you’ll find practical details about compatibility, installation, performance expectations, and whether this part is right for your repair job.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will this MILIPARTS main relay fit?\u003c\/h3\u003e\n\u003cp\u003eThis relay covers a set of specific Honda and Acura models from the late 1990s through the early 2000s. Confirm fit using your vehicle’s year, make and model against the reference numbers before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHonda Accord (1998–2002)\u003c\/li\u003e\n  \u003cli\u003eHonda Odyssey (1998–2004)\u003c\/li\u003e\n  \u003cli\u003eHonda Pilot (2003–2004)\u003c\/li\u003e\n  \u003cli\u003eHonda Prelude (1998–2001)\u003c\/li\u003e\n  \u003cli\u003eAcura CL (2001–2003)\u003c\/li\u003e\n  \u003cli\u003eAcura MDX (2001–2002)\u003c\/li\u003e\n  \u003cli\u003eAcura TL (1999–2003)\u003c\/li\u003e\n  \u003cli\u003eOE references: 39400-S84-003, 39400S84003\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation for a DIYer?\u003c\/h3\u003e\n\u003cp\u003eInstallation is typically straightforward for someone comfortable working under the dash or in the engine bay, depending on model. The relay is supplied as a complete assembly intended to match OEM mounting points and connector pins.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-replacement design reduces modification needs.\u003c\/li\u003e\n  \u003cli\u003eBasic hand tools are usually sufficient.\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle service manual for safe removal and reinstallation.\u003c\/li\u003e\n  \u003cli\u003eDisconnect battery before starting electrical work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect from its electrical performance and durability?\u003c\/h3\u003e\n\u003cp\u003eThis main relay assembly is manufactured to interface with original electrical systems and handle standard load and switching duties. It is not a performance upgrade but a restoration component intended to restore reliable operation when the original relay fails.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered to meet original connector and pin layouts.\u003c\/li\u003e\n  \u003cli\u003eDesigned for normal operating currents and switching cycles.\u003c\/li\u003e\n  \u003cli\u003eQuality control measures mimic engineering part specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow can I be sure this part is the correct match for my car?\u003c\/h3\u003e\n\u003cp\u003eAlways cross-check part numbers and vehicle compatibility before purchase. Use your VIN, year, make, and model with online part-finder tools or compare the OE reference stamped on your existing relay to the numbers provided.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompare OE reference: 39400-S84-003 (also shown as 39400S84003).\u003c\/li\u003e\n  \u003cli\u003eVisually confirm connector shape and pin count against your original part.\u003c\/li\u003e\n  \u003cli\u003eContact seller support with vehicle details if unsure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Technically-minded vehicle owners, independent mechanics, and small repair shops seeking a cost-effective, OEM-replacement main relay for qualifying Honda and Acura vehicles. If you need a like-for-like relay to fix intermittent electrical faults or to replace a failed OEM unit, this MILIPARTS assembly provides a practical solution when matched to the correct model and year.\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: Does this relay replace OE 39400-S84-003?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, this MILIPARTS assembly is supplied as a replacement for OE 39400-S84-003 (also listed 39400S84003).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this relay myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, many owners can install it with basic tools; disconnect the battery and follow your vehicle manual for safety.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MILIPARTS","offers":[{"title":"Default Title","offer_id":48084876394654,"sku":"B0B8MYC9BQ","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/miliparts-main-relay-front-view.jpg?v=1785864869","url":"https:\/\/northtrailauto.ca\/products\/miliparts-main-relay-assembly-for-honda-acura-39400-s84-003-direct-fit-replacement-complete-assembly","provider":"North Trail Auto","version":"1.0","type":"link"}