{"product_id":"king-performance-billet-air-cleaner-king-nut-1-4-20","title":"King Performance Billet Air Cleaner King Nut 1\/4\"-20 | Air-Cooled VW, Buggy \u0026 Carb Air Cleaners | Tool-Free, Knurled 6061 | Black or Polished","description":"\u003ch2\u003eKing Performance Billet Air Cleaner King Nut, 1\/4\"-20\u003c\/h2\u003e\u003cp\u003eThe wing nut that holds your air cleaner lid on is one of the most-handled fasteners on an air-cooled VW engine. Every time you check the filter, sync carbs or peek at the jets it comes off, and the cheap stamped or chromed-steel versions bend, rust and lose their washers in the engine bay. The \u003cstrong\u003eKing Performance Air Cleaner King Nut\u003c\/strong\u003e replaces that throwaway part with a CNC-machined billet nut that you spin on and off by hand, with a built-in knurled base that does the washer's job.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAir cleaners that use a \u003cstrong\u003e1\/4\"-20 (UNC) stud\u003c\/strong\u003e to retain the lid, as used on many aftermarket VW carburetor air cleaners\u003c\/li\u003e\n\u003cli\u003eAir-cooled VW Beetle, Super Beetle, Karmann Ghia, Bus, Thing and Type 3 engines, and Type 1-powered dune buggies, Baja Bugs and sand rails, wherever the air cleaner uses a 1\/4\"-20 stud\u003c\/li\u003e\n\u003cli\u003eNot for air cleaners with metric studs or spring-clip lids. If you are unsure of your stud thread, send us the air cleaner brand and part number and we will check\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCNC machined from \u003cstrong\u003e6061 billet aluminum\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e1\/4\"-20 internal thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated knurled base\u003c\/strong\u003e grips the lid, so no separate washer is needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool-free\u003c\/strong\u003e installation and removal\u003c\/li\u003e\n\u003cli\u003eTwo finishes: \u003cstrong\u003eblack anodized\u003c\/strong\u003e or \u003cstrong\u003epolished billet\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSold individually; order one per air cleaner\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eKing Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eAir Cleaner King Nut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread\u003c\/th\u003e\n\u003ctd\u003e1\/4\"-20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e6061 billet aluminum, CNC machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eBlack anodized or polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBase\u003c\/th\u003e\n\u003ctd\u003eIntegrated knurled base, replaces the washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e1 nut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eKP-KN-AC-BLK \/ KP-KN-AC-POL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eRemove the old wing nut and washer from the air cleaner stud. Seat the air cleaner lid, thread the King Nut on by hand and snug it down until the knurled base bites the lid. Hand-tight is all it needs; do not use pliers or a wrench on billet aluminum, and do not over-tighten, which can distort the lid or strip the stud. Check the stud length first: it needs enough exposed thread to engage the nut fully.\u003c\/p\u003e\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cp\u003eDressing up the top end? Pair the King Nut with the \u003ca href=\"\/collections\/fuel-intake\"\u003eFuel \u0026amp; Intake Components\u003c\/a\u003e range, King's \u003ca href=\"\/products\/king-performance-billet-clutch-adjustment-king-nut-wing-nut\"\u003eKING NUT clutch adjustment wing nut\u003c\/a\u003e, and the \u003ca href=\"\/products\/king-performance-spark-plug-wire-holders-set-of-4-8mm-8-5mm\"\u003eKing spark plug wire holders\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat thread is the Air Cleaner King Nut?\u003c\/strong\u003e\u003cbr\u003e1\/4\"-20 (quarter-inch, 20 threads per inch). It fits air cleaners that use a 1\/4\"-20 stud to hold the lid on.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I still need a washer?\u003c\/strong\u003e\u003cbr\u003eNo. The nut has an integrated knurled base that bears on the lid and grips it, so the separate washer is eliminated.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need tools to install it?\u003c\/strong\u003e\u003cbr\u003eNo. It is designed to go on and come off by hand, which makes filter checks and carb tuning quicker.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is it made of?\u003c\/strong\u003e\u003cbr\u003eCNC-machined 6061 billet aluminum, finished in black anodize or polished.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it sold as a pair?\u003c\/strong\u003e\u003cbr\u003eIt is sold individually. Dual-carb engines with two air cleaners need two.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit my stock VW air cleaner?\u003c\/strong\u003e\u003cbr\u003eOnly if the air cleaner uses a 1\/4\"-20 stud. Many factory oil-bath air cleaners use clips instead of a stud. Send us a photo or part number and we will confirm.\u003c\/p\u003e\u003ch3\u003eWARNING: California Proposition 65\u003c\/h3\u003e\u003cp\u003eThis product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" rel=\"nofollow\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"King Performance","offers":[{"title":"Black Anodized","offer_id":48379475361907,"sku":"KP-KN-AC-BLK","price":25.0,"currency_code":"USD","in_stock":true},{"title":"Polished","offer_id":48379475394675,"sku":"KP-KN-AC-POL","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/king-performance-air-cleaner-king-nut-1-4-20-billet.webp?v=1789861438","url":"https:\/\/www.washburnsmetal.com\/products\/king-performance-billet-air-cleaner-king-nut-1-4-20","provider":"Washburn's Metal","version":"1.0","type":"link"}