Boltigen

Boltigen's RV water inlet check valve is a lead-free brass 3/4" NH (GHT) female to 1/2" NPT male flange fitting with an integrated backflow preventer and dust cap for safe, easy city water hookups on campers and trailers. When you need a reliable connection...

Boltigen RV City Water Inlet with integrated check valve is a durable, lead-free brass connection that turns a 3/4" NH (GHT) hose hookup into a 1/2" NPT inlet while preventing backflow and keeping your RV’s fresh water line protected. This compact inlet assembly installs...

Boltigen 3/8" ID transmission oil cooler hose is a five-foot, SAE J1532–compliant cooler line built to carry transmission, power steering, and hydraulic fluids safely at up to 300 PSI. This heavy-duty cooler hose is engineered for vehicle and industrial cooling or hydraulic circuits where...

Boltigen R410A Mini Split Adapters kit is a six-piece brass connector set that converts 5/16" SAE female to 1/4" SAE male fittings and includes tank adapters, valve cores and installation tools for safe, fast HVAC charging and service. This Boltigen kit supplies the common...

Boltigen RV Fresh Water Inlet is a lead-free brass city-water fill inlet with an integrated check valve, converting 3/4" NH (GHT) female to 1/2" NPT male for secure hose connection on RVs, campers and boats. This replacement inlet is designed to let you connect...

Boltigen's RV City Water Inlet with built‑in check valve is a lead‑free brass replacement inlet that connects 3/4" NH (GHT) female to 1/2" NPT male and protects your RV's fresh water system from backflow and contamination. When you hook your RV, camper, trailer or...

Boltigen RV Winterizing Kit provides a ready-to-install 3-way bypass valve, 59" flexible hose, brass 1/2" barb adapter and all necessary accessories to route antifreeze through your RV plumbing for seasonal protection. Preparing an RV for winter storage is easier when you have a compact,...

Boltigen 1/2" ID transmission oil cooler hose is a 5-foot, SAE J1532-compliant line engineered to carry transmission fluid, hydraulic oil, and power steering fluid with a 300 PSI working pressure and wide temperature resistance. This heavy-duty cooler hose from Boltigen is built to link...

Boltigen's inline fuel pressure gauge kit is a stainless steel, glycerin-filled 0–15 PSI gauge with a 1/8" NPT inlet and 3/8" barb adapter for simple center-back mounting and reliable fuel-system readings. If you need to monitor fuel pressure for troubleshooting or tuning, this Boltigen...

Boltigen R134a to R1234yf Adapter Kit provides color-coded high- and low-side quick couplers to connect R1234yf service lines to legacy R134a vehicle AC ports safely and reliably. Designed for technicians and DIY mechanics who need to bridge between modern R1234yf service equipment and older...

The Boltigen 90° High & Low Pressure adapter kit converts vehicle A/C service ports between R1234yf and R134a quickly and securely. When you need to service a vehicle that uses a different refrigerant standard, this Boltigen adapter set simplifies the job by letting technicians...

Boltigen's Brass High & Low Pressure Adapter Kit converts between R1234YF and R134A fittings so you can safely connect R134A service tools to vehicles or equipment that use R1234YF and vice versa. This compact adapter set provides a temporary mechanical bridge between two different...

Boltigen’s R1234yf to R134a adapter kit provides durable high- and low-side quick couplers that let technicians and DIYers connect R134a service hoses and gauges to R1234yf vehicle AC ports safely and without leakage. Many modern vehicles use R1234yf refrigerant while legacy equipment and common...

Boltigen RV City Water Inlet is a lead-free brass city water fill inlet with an integrated check valve and 3/4" NH (GHT) female to 1/2" NPT male thread for safe, easy RV water hookups. This replacement inlet is built to sit on your RV’s...

Boltigen Refrigerator Freon Recharge Hose Kit is a ready-to-use charging set that lets you access and refill R134a, R12, R22 and similar refrigerants safely with two BPV31 bullet piercing valves and an R134a self-sealing adapter. This compact kit includes all the fittings and a...

Boltigen's inline fuel pressure gauge kit is a glycerin-filled 0–15 psi gauge with 1/8" NPT connection and 3/8" & 5/16" barb fittings for reliable on-vehicle fuel pressure monitoring. Keep close track of fuel-system pressure with a compact, corrosion-resistant gauge built for workshop diagnostics and...

Boltigen R1234yf to R134a Adapter kit converts existing R134a quick-connect hoses and gauges to work with R1234yf systems quickly and securely. This conversion fitting set from Boltigen lets technicians and DIYers adapt R134a charging lines and manifold gauges for R1234yf refrigerant without replacing hoses....

Boltigen RV Winterizing Kit is a blowout hose assembly with a removable 0–60 psi oil pressure gauge, mini shut-off valve, and GHT fittings to safely purge water from RV and sprinkler lines before freezing weather. Preparing an RV, camper, boat or irrigation system for...

Boltigen's 3/8" ID transmission oil cooler hose is a 10-foot, SAE J1532–compliant line engineered for transmission, power steering, and hydraulic fluid routing with 300 PSI working pressure and wide-temperature durability. This transmission cooler hose from Boltigen is crafted for technicians, DIY mechanics, and equipment...

Boltigen's R1234YF Quick Coupler kit converts R1234yf service ports to accept standard R134a/R12 hoses for fast, leak-resistant AC charging and diagnostic work. Boltigen designed this adapter set to let technicians and DIYers attach legacy R134a/R12 service hoses and manifold gauges to modern R1234yf vehicle...

Boltigen’s adapter kit lets you connect R1234yf and R134a automotive AC fittings quickly and securely, converting between the two refrigerant couplers without replacing hoses or gauges. This compact kit contains high- and low-side adapters designed to bridge R1234yf and R134a systems, so technicians and...

Boltigen's quick coupler kit converts R134a service ports to R1234yf fittings, giving you a fast, leak-resistant way to attach charging hoses and gauges. This compact kit includes color-coded high- and low-side adapters plus R134a-to-R1234yf conversion fittings so you can connect standard 1/4" SAE hoses...

The Boltigen Upgraded RV Winterizing Kit is a complete blowout adapter set with a built-in pressure gauge, shut-off valve and 60-inch reinforced hose to safely purge and protect RV, boat and outdoor plumbing against freeze damage. Preparing an RV, camper, boat or sprinkler system...

Boltigen's 59" RV Winterizing Hose is a complete blowout kit that lets you safely clear and protect RV, boat, or trailer plumbing using compressed air while monitoring pressure with an integrated 60psi gauge and a control valve. Camping rigs, travel trailers and seasonal boats...

Boltigen's R1234YF/R134A AC Oil Dye Injector is a compact, hand-operated tool for safely injecting oil or fluorescent dye into low-side air conditioning systems. This injector kit is built to work with both R1234YF and R134A systems and includes quick couplers for each refrigerant. Its...

Boltigen 30-piece HVAC access service valve kit: 1/4" SAE x 1/4" OD x 3.54" stem Schrader-style valves with spring-assisted poppet cores for refrigerant charging, pressure checks, and vacuum access. These compact service valves provide a durable, corrosion-resistant access point for refrigeration and air-conditioning systems....

Boltigen AC Oil Dye Injector Kit is a compact low-side injector set that injects oil or fluorescent dye into automotive and residential A/C systems while preventing backflow. This kit puts a 2 oz (60 ml) injector, low-pressure quick couplers for R134a and R1234yf, and...

Boltigen AC Dye Oil Injector Backflow Prevent Kit is a complete low-side injection system for adding oil or fluorescent dye safely into automotive and HVAC refrigerant lines, with backflow protection and multi-refrigerant couplers. This injector kit lets technicians and DIYers introduce small, controlled amounts...

Boltigen AC Oil Dye Injector Kit is a complete, metal-bodied toolset for safely introducing tracer dye and oil into automotive and HVAC low-side refrigerant systems compatible with R134a, R1234yf and R410A mini-splits. This kit brings together a screw-in injector, adjustable quick couplers for multiple...

Boltigen’s 3-piece AC manifold hose kit is a complete R134a-ready charging and service set that includes reinforced blue/red/yellow hoses, self-sealing puncture can taps, adjustable quick couplers, and multiple tank adapters for automotive and HVAC work. This compact kit puts the common connections and accessories...

Boltigen's 1" Fuel Transfer Hose (6 ft, 1" NPT) is a reinforced, multi-layer hose engineered for safe, flexible transfer of gasoline, diesel, kerosene and compatible fuels. This 6-foot, 1" NPT fuel hose combines a nitrile rubber core, stainless-steel braid reinforcement, and a blended PVC-nitrile...

Boltigen's 10-foot, 3/4" NPT fuel transfer hose is a heavy-duty, flexible line built for safe, leak-resistant transfer of gasoline, diesel, biodiesel and kerosene. This hose pairs a nitrile inner tube with stainless-steel braid and a durable PVC/nitrile outer jacket to deliver reliable fuel handling...

Boltigen’s 3/8" ID transmission oil cooler hose is a 20-foot, SAE J1532-rated line engineered to safely route transmission, hydraulic, and power steering fluids at up to 300 PSI. Whether you’re rebuilding a cooler loop, replacing a worn power-steering line, or fabricating a hydraulic run...

Boltigen's R1234yf Dye Injector Kit is a handheld AC oil and dye injector with a shut-off valve and adjustable quick couplers designed for both R1234yf and R134a systems. This compact kit gives you a controlled way to add tracer dye or lubricant to automotive...

Boltigen AC Oil Injector Kit is a compact, multi-adapter tool that injects refrigerant oil and fluorescent dye into vehicle and small HVAC systems for leak tracing and oil top-ups. This compact toolkit brings a professional oil/dye injection solution to home mechanics and technicians who...

Boltigen's 3/4" EPDM heater hose is a 20-foot, cut-to-length coolant line designed to replace or extend radiator, heater core, and engine cooling connections reliably in extreme temperatures. When you need a durable, flexible rubber hose for coolant, water, or antifreeze routing, this SAE 20R3‑style...

Boltigen’s RV Water Pressure Regulator Kit is a complete hookup solution that controls campsite water pressure and filters incoming water for safer, better-tasting use in RVs and campers. Whether you’re connecting to inconsistent municipal water supplies or campground spigots, this all-in-one kit combines an...

Boltigen's RV Water Pressure Regulator Filter Kit is a complete fresh-water solution that combines an adjustable pressure regulator, two NSF-certified inline filters and essential hose fittings to protect your camper plumbing and deliver cleaner water on the road. Traveling with an RV means relying...