{"product_id":"sierra-18-7999-air-filter-for-mercury-verado-135-150-175-4-stroke-replaces-35-896247","title":"Sierra 18-7999 Air Filter - Replaces 35-896247 - Mercury Marine 135\/150\/175 4-Stroke Verado (S\/N 1B227000 \u0026 Up)","description":"\u003cp\u003eThe Sierra 18-7999 Air Filter is a replacement air filter engineered for Mercury Marine 135, 150, and 175 horsepower 4-Stroke Verado outboards with serial number 1B227000 and up. It is built to restore proper airflow to the engine's induction system, helping maintain combustion efficiency and protect internal components from airborne debris and particulates during operation. This filter is designed as a direct replacement for the OEM Mercury Marine 35-896247 filter, allowing a straightforward swap without modification.\u003c\/p\u003e\u003cp\u003eThe filter fits Mercury's L-4 Verado outboard configuration and measures 10.39 inches long by 8.86 inches wide by 1.73 inches high, matching the housing dimensions of the applications it serves. At 0.3 pounds, it is a lightweight service part intended for routine maintenance intervals alongside other engine air intake components. Sierra backs the 18-7999 with a 90 day manufacturer warranty, giving buyers confidence in fit and function for this specific Verado application.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Air Filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 35-896247\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Configuration:\u003c\/strong\u003e L-4 Verado outboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 10.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 8.86 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1.73 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282200121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 90 days\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 135\/150\/175 4-Stroke Verado (S\/N 1B227000 \u0026amp; Up)\u003c\/li\u003e\n\u003cli\u003eL-4 Verado outboard\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e35-896247\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-7999 air filter fit?\u003c\/strong\u003e The Sierra 18-7999 fits Mercury Marine 135, 150, and 175 horsepower 4-Stroke Verado outboards with serial number 1B227000 and up, in the L-4 Verado configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-7999 replace?\u003c\/strong\u003e It replaces Mercury Marine OEM part number 35-896247, so it can be installed as a direct swap on applicable Verado outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this air filter?\u003c\/strong\u003e The 18-7999 measures 10.39 inches long by 8.86 inches wide by 1.73 inches high.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-7999 air filter weigh?\u003c\/strong\u003e It weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-7999 a genuine Sierra part or a generic aftermarket copy?\u003c\/strong\u003e This is a genuine Sierra branded replacement part, part number 18-7999, manufactured to serve as a direct equivalent for Mercury Marine 35-896247.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this filter come with a warranty?\u003c\/strong\u003e Yes, the 18-7999 is covered by a 90 day manufacturer warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the 18-7999 on a Verado outboard below 135 horsepower?\u003c\/strong\u003e No, the stated fitment for the 18-7999 covers 135, 150, and 175 horsepower 4-Stroke Verado models with serial number 1B227000 and up; lower horsepower Verado outboards are not listed in its fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does serial number 1B227000 and up mean for this filter's fitment?\u003c\/strong\u003e It indicates the 18-7999 is intended for Mercury Marine 135\/150\/175 4-Stroke Verado outboards built from serial number 1B227000 onward; engines with earlier serial numbers may require a different filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-7999?\u003c\/strong\u003e Each order includes one Sierra 18-7999 air filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7999 an inline-4 or V-configuration filter?\u003c\/strong\u003e The 18-7999 is designed for the L-4 (inline-4 cylinder) Verado outboard configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the 18-7999 differ from the Sierra 18-7997 air filter?\u003c\/strong\u003e The 18-7999 is built for 135\/150\/175 4-Stroke Verado outboards and replaces 35-896247, while the 18-7997 is a separate part number for different DFI outboard applications; the two are not interchangeable.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988427518171,"sku":"SIE-18-7999","price":43.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7999_lg__61884.1722346042.500.750.jpg?v=1785188606","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7999-air-filter-for-mercury-verado-135-150-175-4-stroke-replaces-35-896247","provider":"Good Vibes Marina","version":"1.0","type":"link"}