Sunluway 522 Gear & Pulley Puller — Large 2"–7-3/4" Spread, 4140 Steel, 3/4"-16 Screw

The Sunluway 522 is a heavy-duty large gear and pulley puller designed to replace Ford D80L-522-A, 303-D025 and OTC 522, offering a wide 2"–7-3/4" spread and a 3/4"-16 x 11-5/8" forcing screw for reliable removal of tapped-hole components.

Whether you’re a professional mechanic or a DIY enthusiast, this puller is built to tackle stubborn gears, pulleys and similar parts that thread to a hub. Constructed from hardened 4140 impact-grade steel with a black powder coat finish, the tool balances strength and corrosion resistance for repeated shop use. It accepts cap screws up to 1/2" diameter and features an 8-1/4" wide block to stabilize the tool during extraction.

How does the Sunluway 522 handle different pulley sizes?

The adjustable arms and broad spread let this puller work on a range of diameters without separate adapters. You can set the jaws anywhere between 2" and 7-3/4" to match your part, keeping the load centered for safer removal.

• Spread range: 2" to 7-3/4" for small to large pulleys
• Block width: 8-1/4" for enhanced stability
• Accepts cap screws up to 1/2" diameter for flexible attachment

What are the key durability and construction details?

This puller is forged from 4140 impact-grade steel, chosen for toughness under high force. A black powder-coated finish helps resist rust and surface wear, extending useful life in workshop environments.

• Material: high-hardened 4140 impact-grade steel
• Finish: black powder coat for corrosion resistance
• Forcing screw: 3/4"-16 x 11-5/8" long for strong, controlled extraction

Which applications and vehicles is this compatible with?

The Sunluway 522 is made to match the form and function of Ford D80L-522-A and OTC 522 style pullers, so it suits many automotive and industrial tasks requiring tapped-hole removal. Use it on alternators, water pump pulleys, certain flywheels and other components with threaded mounting points.

• Direct replacement for Ford D80L-522-A, 303-D025 and OTC 522 equivalents
• Works with gears, pulleys and parts that have tapped bolt holes
• Accepts standard cap screws up to 1/2" for common hardware compatibility

How do you use and maintain the puller safely?

Set the jaws to the part, secure with appropriate cap screws, and turn the forcing screw gradually to draw the component off its hub. Keep threads clean, apply light lubricant to the forcing screw, and inspect the tool before each use for deformation or cracks.

• Attach cap screws (up to 1/2" diameter) into tapped holes to secure arms
• Turn the 3/4"-16 forcing screw evenly to avoid cocking the puller
• Maintain with light oil on threads and store dry to preserve the finish

Who is this for: The Sunluway 522 puller is aimed at professional technicians, fleet maintenance crews and informed home mechanics who need a rugged, versatile tool for removing threaded gears and pulleys. If you work on vehicles or machinery that use tapped-hole mounted components and want a direct-fit replacement for Ford D80L-522-A or OTC 522 tools, this puller gives the reach, strength, and hardware compatibility you require. Sunluway provides 12 months warranty support if questions or issues arise.