Arlen Ness Radius Oil Pressure Gauge Kit For Harley EVO 1984-2000

Arlen Ness Radius Oil Pressure Gauge Kit For Harley EVO 1984-2000 Arlen Ness Radius Oil Pressure Gauge Kit: Precision Monitoring for the Evolution Era Keep a watchful eye on your engine’s lifeblood with the Arlen Ness Radius Oil Pressure Gauge Kit. Specifically designed for 1984–2000 Harley-Davidson Evolution engines, this kit is more than just a Stage 1 styling upgrade; it is a critical diagnostic tool. The “EVO” engine is legendary for its reliability, but maintaining proper oil pressure is paramount to its longevity. This kit allows you to move beyond the simple dash warning light, providing a real-time mechanical readout of your oiling system’s health. Whether you are idling at a stoplight or cruising the highway, Arlen Ness ensures your V-Twin performance is always within safe parameters. Show-Quality Billet Radius Housing In true Arlen Ness fashion, this kit is designed to enhance the aesthetics of your Big Twin. The gauge is encased in a precision-machined billet aluminum housing featuring the signature “Radius” styling. Finished in a mirror-like chrome plating, the bracket and housing add a custom, high-end feel to the top end of your motor. It mounts securely to the bolts on the rear rocker box, placing the gauge in a perfect line of sight just below the fuel tank. This eliminates the industrial look of standard hardware and replaces it with a chassis styling upgrade that flows perfectly with the lines of your Softail, Dyna, or Touring model. Liquid-Filled Gauge for Vibration Resistance Harley-Davidson Evolution engines are known for their distinct mechanical character and vibration. A standard dry gauge would see the needle bounce uncontrollably, making it impossible to read. The Arlen Ness gauge is liquid-filled with high-grade silicone to dampen internal movement. This ensures the needle remains steady and accurate, even under high-RPM conditions. The gauge face features a clean, easy-to-read scale, providing engine vitals monitoring that professional builders and long-distance riders trust for chassis reliability and engine safety. Complete Stainless Steel Line and Hardware This kit is engineered for a seamless, professional installation. It includes a braided stainless steel oil line that is much more durable and heat-resistant than plastic or rubber alternatives. The high-pressure line ensures a consistent flow to the gauge without the risk of leaks or melting against the hot cylinder fins. All necessary fittings and chrome-plated mounting hardware are included, making this a comprehensive Harley-Davidson service solution. It is designed to be a direct “bolt-on” for 80-inch EVO motors, requiring no permanent modifications to your engine cases or rocker boxes. Comprehensive Fitment (1984–2000 EVO) This radius gauge kit is tailored for the Evolution 1340cc (80ci) Big Twin engine family. Confirmed fitment includes: Softail Series: Fat Boy, Heritage Classic, Softail Custom, and Night Train (1984–1999). Dyna Series: Wide Glide, Low Rider, and Super Glide (1991–1998). Touring Series: Road King, Electra Glide, and Tour Glide (1984–1998). Note: Specifically for Big Twin Evolution engines. Not compatible with Twin Cam or Sportster models. Why Choose Arlen Ness? Arlen Ness is a name synonymous with the birth of custom motorcycling. For over 50 years, the Ness family has produced aftermarket Harley parts that set the trend for the entire industry. When you install an Arlen Ness component, you aren’t just adding a part; you are adding a piece of motorcycle history. Their commitment to mechanical precision and show-winning style ensures that your custom Harley project remains a cut above the rest in both performance and appearance. Installation and Maintenance Tips When installing your radius oil pressure kit, we recommend using a small amount of thread sealant on the fittings to ensure a leak-free seal. It is also the ideal time to perform an oil and filter change to ensure your new gauge is reading the pressure of fresh, clean lubricant. Periodically check the stainless steel line for any signs of chafing and wipe down the chrome housing with a soft microfiber cloth and high-quality polish to maintain its brilliant shine against the heat of the engine. Gain a clear view of your engine’s health today. Order the Arlen Ness Radius Oil Pressure Gauge Kit and ride with confidence and style! Arlen Ness Radius Oil Pressure Gauge Kit For Harley EVO Features: A clean way to mount an oil pressure gauge on your Evo Big Twin engine and allows the rider to constantly monitor the engines oil pressure CNC-machined from aluminum Oil gauge features a stainless steel housing and glass lens and is also filled with vibration isolating glycerin for clear viewing in all riding situations Complete kit includes 60 lb. black face liquid gauge with the Ness shield logo, chrome brackets, chrome housing cone, stainless steel hose and chrome hardware Kit will accept slightly larger gauges if the cone is not used   Product Style American-twin Item # Catalog Number Store Sku MFR. Product # Availability Black 90756 220-1041 15-676 In Stock: Ships within 24 hours Chrome 71855 740-516 15-657 In Stock: Ships within 24 hours This Product Fits Harley Davidson Disc Glide FXRDG 1984 Dyna Convertible FXDS 1994, 1995, 1996, 1997, 1998 Dyna Glide Custom FXDC 1992 Dyna Glide Daytona FXDB-D 1992 Dyna Glide Sturgis FXDB-S 1991 Dyna Low Rider FXDL/I 1993-1998 Dyna Super Glide FXD/I 1995, 1996, 1997, 1998 Dyna Wide Glide FXDWG/I 1993-1998 Electra Glide Classic FLHTC/I 1984-1998 Electra Glide Special FLHX 1984 Electra Glide Sport FLHS 1984-1993 Electra Glide Standard FLHT/I 1984-1998 Electra Glide Ultra Classic FLHTCU/I 1989-1998 Fat Bob FXEF 1985 FLH 1984, 1985 FXR2 CVO/SE 1999 FXR3 CVO/SE 1999 FXR4 CVO/SE 2000 Low Glide/Low Rider FXRS 1984-1993 Low Rider Chrome FXRC 1985, 1986, 1987, 1988 Low Rider Custom FXLR 1987-1994 Low Rider Sport FXRS-SP 1987-1993 Road Glide FLTR/I 1998 Road King Classic FLHRC/I 1998 Road King FLHR/I 1994, 1995, 1996, 1997, 1998 Softail Bad Boy Springer FXSTSB 1995, 1996, 1997 Softail Custom FXSTC/I 1986-1999 Softail Deuce FXSTD/I 1999 Softail Fat Boy FLSTF/I 1990-1999 Softail Heritage Classic FLSTC/I 1987-1999 Softail Heritage FLST/I 1986, 1987, 1988, 1989, 1990 Softail Heritage Springer FLSTS/I 1997, 1998, 1999 Softail Night Train FXSTB/I 1999 Softail Nostalgia FLSTN/I 1993 Softail Special FLSTN/I 1994, 1995, 1996 Softail Springer FXSTS/I 1988-1999 Softail Standard FXST/I 1984-1999 Sport Glide FXRT 1984-1992 Sport Glide Grand Touring FXRD 1986 Super Glide FXE 1984, 1985 Super Glide FXR 1986-1994 Tour Glide Classic FLTC/I 1984-1991 Tour Glide FLT 1984, 1985, 1986 Tour Glide Ultra Classic FLTCU/I 1989-1996 Wide Glide FXWG 1984, 1985, 1986