Engine & Battery

The 5025 refractometer is a portable, precision, optical instrument used for measuring the DEF concentration. When a liquid sample is placed on the prism, the light passing through it is bent. The more concentrated the liquid, the more the light will...

Works on any diesel engine to test compression up to 1000 PSI and 7000 kPa. Features include a check valve, push button compression release, and a quick disconnect fitting on the hose end. Straight and 45° hose connectors are included. No. 304802 –...

Used to compress valve springs for removal or installation. The heavy duty c-frame has a 9" opening and a 5" throat. Kit includes 16mm, 19mm, 23mm, 25mm, and 30mm valve spring retainer adapters.

This complete set includes 12 chrome plated compressor sleeves covering 1 3/8" thru 4 3/8 diameter piston applications. Both the ring compressor and ring expander pliers feature a ratcheting lock to hold the handles in position for easy piston and ring...

Piece,"This 6 ring set covers 2 7/8"" thru 4 3/8"" piston diameters. Compressor pliers feature a ratcheting lock to hold the handles in position for easy piston installation.."

Universal Fan Clutch Tool

Holds damper for removal and installation of the crank bolt on most Honda/Acura engines. Can remove and install the damper so engine will not rotate. 4" offset. 1/2" square drive can be used with ratchet or breaker bar. 50mm hex with large center hole...

Set includes: 4673-1 29 mm Pressure / Vacuum Switch Socket 4673-2 7/8" Vacuum Switch Socket 4673-3 27 mm Oil Pressure Sending Unit Socket 4673-4 7/8" Vacuum Switch Socket 4673-5 1-1/16" & 1" Oil Pressure Sending Unit Socket 4673-6 7/8" Long Oxygen...

Fits tensioner pulleys with 13mm-16mm, 18mm hex or 3/8" and 1/2" sq drives. 13mm and 15mm 12-point wrenches built into the handle. 13mm, 14mm and 15mm crows foot wrenches also included.

OTC tool number 4631 is a battery service tool kit which makes removing stubborn terminals easy without damaging anything else. All the related tools in one case to remove terminals, clean them and re-install the replacement battery quickly and...

# Designed to remove and install frost plugs used in liquid-cooled gas and diesel engines found in automobiles, trucks, SUVs, agricultural equipment, and construction equipment. # Simply use a hammer with the driver and appropriate disc to install frost...

Two valve spring adapters, fit valve spring retainers up to 1" and 1-3/16". Jaw opening (A) of 1-3/8" to 5-5/8" throat clearance of 5-7/8".