{"product_id":"ict-billet-turbo-400-th400-speedometer-plug-bare-billet-aluminum-includes-o-rings-bolt","title":"ICT Billet Turbo 400 (TH400) Speedometer Plug — Bare Billet Aluminium, Includes O‑Rings \u0026 Bolt","description":"\u003cp\u003e\u003cstrong\u003eICT Billet's billet aluminum speedometer plug for the Turbo 400 (TH400) is a precision-made blanking plug that replaces the stock speed sensor on Chevy V8 transmissions when a mechanical or GPS speed reading is not required.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEngineered and manufactured in Wichita, Kansas from aerospace-grade USA billet aluminum, this plug is a direct-fit solution for Turbo 400 transmissions commonly used behind small-block Chevy engines such as SBC 305, 327, 350 and big-block 383, including 5.0L and 5.7L V8 applications. It’s supplied as a bare aluminum assembly and includes the plug body, mounting bolt, and sealed O-rings so you get a complete, leak-resistant install right out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this plug work with transmissions that don’t need a speed sensor?\u003c\/h3\u003e\n\u003cp\u003eThis plug occupies the sensor port on TH400 transmissions, providing a secure seal where a speedometer pickup would normally mount. It prevents fluid leaks and keeps contaminants out of the transmission case while eliminating an unused sensor location.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit for TH400 transmission speedometer port\u003c\/li\u003e\n  \u003cli\u003eIncludes bolt and O-rings for a reliable seal\u003c\/li\u003e\n  \u003cli\u003eReplaces sensors when using GPS or electronic speed sources\u003c\/li\u003e\n  \u003cli\u003ePrevents hydraulic fluid seepage and debris entry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my Chevy small-block or big-block application?\u003c\/h3\u003e\n\u003cp\u003eThe plug is designed specifically for Turbo 400 transmissions and is compatible with common Chevy V8 pairings, including SBC 305, 327, 350 and 383 engines, and 5.0L \/ 5.7L configurations. Verify your transmission model is TH400 to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits TH400 (Turbo 400) transmission speedometer port\u003c\/li\u003e\n  \u003cli\u003eWorks with small-block and many big-block Chevy setups\u003c\/li\u003e\n  \u003cli\u003eIdeal when the vehicle uses GPS or dash electronics for speed\u003c\/li\u003e\n  \u003cli\u003eSold as a bare aluminum plug suitable for most retrofit projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and manufacturing standards were used?\u003c\/h3\u003e\n\u003cp\u003eMade from aerospace-grade, USA-produced billet aluminum, this plug is CNC-machined in Wichita to tight tolerances for longevity and corrosion resistance. The billet construction provides a sturdy, lightweight part that resists deformation compared with cast or stamped alternatives.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAerospace-grade billet aluminum sourced in the United States\u003c\/li\u003e\n  \u003cli\u003eCNC-machined for precise thread and seat engagement\u003c\/li\u003e\n  \u003cli\u003eSupplied with O-rings to protect against leaks and contamination\u003c\/li\u003e\n  \u003cli\u003eProudly manufactured in Wichita, Kansas by ICT Billet\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install the speedometer plug and what hardware comes with it?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: remove the original speedometer sensor or cap, clean the mounting surface, fit the O-rings, and torque the plug’s mounting bolt to the manufacturer’s recommended spec. The kit ships with the plug, the correct bolt, and O-rings to make installation simple and leak-proof.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes plug body, mounting bolt, and O-rings\u003c\/li\u003e\n  \u003cli\u003eSimple thread-in installation—no special tools beyond common hand tools\u003c\/li\u003e\n  \u003cli\u003eTorque to transmission manufacturer’s specifications\u003c\/li\u003e\n  \u003cli\u003eCan be used as a permanent blank or temporary cap during conversions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This ICT Billet speedometer plug is intended for builders, restorers, and customizers who use Turbo 400 transmissions in Chevy V8 projects and do not require a mechanical speed sensor — for example, vehicles converted to GPS speedometers, transmissions used in race\/track cars, or restorations where the original electronic sender is not desired. It’s a practical choice for anyone seeking a durable, precision-made blanking plug manufactured in the USA and supplied with the necessary hardware for immediate installation.\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 use this plug if my car uses a GPS speedometer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This plug is designed to blank the TH400 speed sensor port when a GPS or alternate speed source is used.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the plug compatible with all Turbo 400 transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits standard TH400 speedometer ports. Confirm your transmission is a Turbo 400 before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ICT Billet","offers":[{"title":"Default Title","offer_id":55166062657879,"sku":"B077PL47YV","price":38.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ict-billet-th400-speedometer-plug-front-view.jpg?v=1790362182","url":"https:\/\/britishgarage.co.uk\/products\/ict-billet-turbo-400-th400-speedometer-plug-bare-billet-aluminum-includes-o-rings-bolt","provider":"British Garage","version":"1.0","type":"link"}