OTC

The Robinair 18191A is a chrome-plated, quick-connect high-side R-134a service coupler with a red manual actuator engineered for safe, compact access to automotive A/C service ports. This precision coupler attaches to Robinair Enviro-Guard hoses to give technicians reliable access to R-134a high-side service ports...

OTC 1914 is a 4-inch, 6-point wheel bearing locknut socket engineered for 3/4" square-drive manual tools to remove and install locknuts without rounding. This heavy-duty socket is purpose-built for wheel bearing locknuts on commercial and passenger vehicles. Forged from high-strength steel and finished for...

The OTC 3650 Heavy-Duty Remote Starter Switch lets one technician safely crank or start a vehicle from under the hood or from either side using a rugged push-button control and heavy-gauge leads. If you work on starters, engines, or electrical systems, this manual starter...

The OTC 5961 Drain Plug Pro Tool Kit is a magnetic, interchangeable drain-plug removal and threading system that captures hot plugs and lets you remove or start fasteners safely in tight spaces. This compact kit builds on OTC’s original concept to cover most current...

OTC 5605 Deluxe Compression Tester Kit is a ready-to-use compression testing set for gasoline engines that includes multiple specialty adapters, a long flex hose and a dual-scale gauge for fast, reliable readings. This full-service kit supplies the fittings and hardware most shops need to...

The OTC 5609 Cylinder Leakage Tester Kit is a complete, ready-to-use set for pinpointing internal engine leaks like damaged rings, leaking head gaskets, or worn valves. This compact kit groups precision gauges, a pressure-regulated manifold, flexible hose and common thread adapters into a durable...

The OTC 8150 Conical Pitman Arm Puller is a heavy-duty tool engineered to remove Pitman arms on domestic cars and light trucks using a conical seating and a 3/4-16 x 4-3/4" forcing screw for reliable, controlled extraction. If you work on steering components, the...

The OTC 5630 Fuel Pressure Test Kit is a handheld diagnostic tool that measures fuel rail pressure up to 100 psi so you can pinpoint faulty filters, regulators, lines or pumps without removing components. When a vehicle shows drivability issues—hard starting, stalling, or poor...

OTC 6673 Universal Belt Tension Gauge is a precision dual-scale tool that measures drive-belt tension from 30–180 ft·lb (130–800 N·m) for fast, accurate adjustments. The OTC 6673 provides a straightforward way to verify belt tension to manufacturer specifications so belts and driven accessories operate...

The OTC 5606 Compression Tester Kit is a professional-grade dual-scale gauge set with multiple adapters and flexible hoses for fast, accurate gasoline engine compression checks. This compact kit gathers everything a technician or serious DIYer needs to measure cylinder compression on cars, motorcycles, marine...

The OTC 4579 is a 9-way chrome-plated slide hammer puller kit with a 5 lb. hammer and multiple reversible attachments for removing hubs, axles, bearings, seals, and sheet metal dents. This compact, workshop-ready set assembles the common slide-hammer tools technicians reach for most often....

The OTC 5025 Refractometer Kit is a handheld optical tester that quickly checks Diesel Exhaust Fluid (DEF) concentration to confirm the proper 32.5% urea solution for SCR systems. Keep SCR-equipped diesel engines running within manufacturer and regulatory guidelines by verifying DEF strength on the...

OTC 6295 Front End Service Set is a five-piece toolkit for removing and separating pitman arms, ball joints, and tie rods across most vehicle makes. This professional-grade kit gathers the most commonly used pullers and separators into a single blow-molded case so technicians and...

The OTC 6697 is a dedicated axle shaft seal installer that seats the Ford front axle shaft seal precisely into the wheel knuckle to prevent vacuum leaks that stop 4WD engagement. When the vacuum-operated front axle on 2005 and newer Ford F-250 and F-350...

OTC 5613 is a handheld vacuum and low-pressure gauge kit designed to quickly identify vacuum leaks, low-pressure fuel issues, and other engine drivability problems. This compact kit combines a large dual-purpose gauge with a selection of adapters and hose fittings housed in a rugged...

The OTC 5911A Drain Plug Pro is a magnetic, flexible-shaft tool that lets you remove pre-loosened oil pan drain plugs and access tight fasteners without dropping plugs or putting your hand into hot oil. The OTC 5911A combines a magnetized head, a pliable shaft...

OTC 6900 is a one-piece 9/16" spark plug socket with a built-in extension and rubber insert designed to reach and protect spark plugs in 2004–newer Ford F-150 5.4L 3-valve Triton V8 engines. This specialized socket combines a long, fixed extension with a soft internal...

The OTC 4573 Universal Overhead Valve Spring Compressor is a compact, spring-loaded tool designed to compress valve springs on installed cylinder heads for valve spring removal and valve stem seal replacement. Designed for technicians working on cars, vans and light trucks, the OTC 4573...

The OTC 6007 Lower Control Arm Prying Tool lets one technician safely pry and position the lower control arm for ball joint installation using a 7/8" pry bar. Replacing or fitting a ball joint on a vehicle's lower control arm usually needs two people...

OTC 1925 is a heavy-duty 3-3/4" 8-point wheel bearing locknut socket engineered for manual 3/4" drive use and deep spindle clearance. This socket is built to remove and install wheel bearing locknuts without deforming the fastener. Constructed from high-strength steel, the OTC 1925 resists...

OTC 3633-10 is a pack of ten bright red, high-intensity slim-style replacement bulbs designed to fit OTC part numbers 3633 and 3639 for clear, consistent illumination in diagnostic lights and signal fixtures. These OTC replacement bulbs come in a compact slim profile and deliver...

The OTC 5610 is a professional dual-gauge oil pressure test kit for both transmissions and engines, offering high- and low-pressure ranges, 13 adapters, and a protective blow-molded case for static or on-road diagnostics. This compact kit gives technicians and advanced DIYers the tools to...