{"product_id":"sierra-18-5273-tune-up-kit","title":"Sierra Tune Up Kit - SIE-18-5273","description":"\u003cp\u003eSierra 18-5273 MerCruiser Tune Up Kit for V8 Thunderbolt HEI Ignitions\u003c\/p\u003e\u003cp\u003eSierra high-quality engine parts are designed to meet OEM specifications. Fits GM V-8 engines with Thunderbolt IV \u0026amp; V HEI ignitions.\u003c\/p\u003e\u003cp\u003eVoltage Regulator 18-5710\u003c\/p\u003e\u003cp\u003eKit Includes:\u003c\/p\u003e\u003cp\u003eRotor 18-5431\u003c\/p\u003e\u003cp\u003eDistributor Cap 18-5395\u003c\/p\u003e\u003cp\u003eGasket\u003c\/p\u003e\u003cp\u003eInterchangeable with:\u003c\/p\u003e\u003cp\u003eGLM\u003c\/p\u003e\u003cp\u003e71780\u003c\/p\u003e\u003cp\u003eMercury\u003c\/p\u003e\u003cp\u003e805759Q3\u003c\/p\u003e\u003cp\u003e805759T3\u003c\/p\u003e\u003cp\u003eMallory\u003c\/p\u003e\u003cp\u003e9-29350\u003c\/p\u003e\u003cp\u003ePro Marine\u003c\/p\u003e\u003cp\u003e64759K\u003c\/p\u003e\u003cp\u003eRedline\u003c\/p\u003e\u003cp\u003eRL5273\u003c\/p\u003e\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWhat is the Sierra 18-5273 MerCruiser Tune Up Kit used for? The Sierra 18-5273 MerCruiser Tune Up Kit is designed for GM V8 engines equipped with Thunderbolt IV and Thunderbolt V HEI ignitions. Sierra engine parts are designed to meet OEM specifications, and this kit provides the listed components for a tune-up on compatible applications.\u003c\/li\u003e\n\u003cli\u003eWhat engines is the Sierra 18-5273 tune-up kit compatible with? The Sierra 18-5273 is designed to fit GM V8 engines with Thunderbolt IV and Thunderbolt V HEI ignitions. The supplied product description does not specify individual engine models, years, horsepower ratings, or serial-number ranges, so those details should be verified before ordering.\u003c\/li\u003e\n\u003cli\u003eWhat is included in the Sierra 18-5273 MerCruiser Tune Up Kit? The kit includes a Sierra 18-5431 rotor, 18-5395 distributor cap, and a gasket. The product description also lists Voltage Regulator 18-5710 separately, but it does not identify it as part of the kit includes list.\u003c\/li\u003e\n\u003cli\u003eWhich parts are interchangeable with the Sierra 18-5273? The Sierra 18-5273 is listed as interchangeable with GLM 71780, Mercury 805759Q3 and 805759T3, Mallory 9-29350, Pro Marine 64759K, and Redline RL5273. Verify the application and ignition configuration before using an interchangeable part number for your engine.\u003c\/li\u003e\n\u003cli\u003eWhat type of ignition does the Sierra 18-5273 support? The Sierra 18-5273 is designed for Thunderbolt IV and Thunderbolt V HEI ignition systems on GM V8 engines. The product description does not provide installation instructions or additional ignition-system requirements, so follow the applicable engine service information when installing the tune-up components.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":50582491955458,"sku":"SIE-18-5273","price":59.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/3024\/2562\/files\/18-5273__90291.1739458769_31993f48-42c0-4f0d-89c6-80b5e20f3b1b.webp?v=1791081988","url":"https:\/\/allmarineworld.com\/products\/sierra-18-5273-tune-up-kit","provider":"All Marine World","version":"1.0","type":"link"}