Lisle Pneumatic Fan Clutch Wrench Set — 10‑pc kit, multi‑size driving wrenches for domestic & import engines

Lisle 43350 is a 10-piece pneumatic fan clutch wrench set designed to speed up removing and installing multi-tooth fan clutches when used with an air hammer.

Mechanics and DIYers working on domestic and import engines can use this kit to tackle stubborn fan clutches faster than with traditional hand wrenches. The set supplies nine driving wrenches that cover common OEM sizes for Ford, GM, VW, BMW, Chrysler and newer International applications, plus a specially sized adapter. Each driving wrench is intended to fit over the fan clutch’s splined ring and accept impact energy from an air hammer to break free or secure fasteners without damaging the clutch hub.

Which vehicle makes and models does this set fit?

The Lisle 43350 targets popular passenger cars, light trucks and some commercial engines from major manufacturers. It includes sizes that match many Ford, GM, Volkswagen, BMW and Chrysler clutch designs, and covers several newer International engine clutches.

• Includes driving wrench sizes: 7/8", 32mm, 36mm, 40mm thin, 47mm, 1-7/8", 2", 52mm and 2-1/8".
• Covers common domestic and European fan clutch splines and thin-profile designs.
• Suits both OEM replacement and aftermarket service on compatible models.

How does the pneumatic method compare to conventional fan clutch wrenches?

Using an air hammer with the Lisle set transfers impact energy through the driving wrench to quickly free seized or tightly torqued clutches. This method is often faster than using large hand wrenches or breaker bars and can reduce effort on repetitive jobs.

• Pneumatic impacts deliver repeated force to break initial friction and corrosion bonds.
• Minimizes the need for excessive manual leverage or risking wrench slip.
• Requires correct setup and an appropriate air hammer for safe, effective use.

What’s included in the 10-piece kit and how do I use each part?

The kit provides nine driving wrenches sized to match a wide range of fan clutch profiles plus the operating adapter for your air hammer. Select the wrench that seats fully over the clutch hub, attach it to the air-hammer adapter, then apply controlled impacts to loosen or torque the clutch.

• Nine driving wrenches sized in both inches and millimeters for fitment flexibility.
• An air-hammer compatible adapter to transfer impact energy into the selected wrench.
• Designed for direct contact on the clutch flange—no extra sockets required.

Are there safety or setup tips I should follow?

Always secure the engine and cooling components, wear eye and hand protection, and use moderate air pressure to avoid over-driving the clutch. Confirm the selected wrench fully engages the clutch surface to prevent slipping or damage to the tool and part.

• Inspect wrench fit before applying impact; poor fit increases risk of rounding clutch edges.
• Use appropriate air-hammer speed and brief application to avoid excessive force transfer.
• Follow vehicle manufacturer torque specs when reassembling the fan clutch.

Who this set is for: Professional technicians, fleet maintenance shops and experienced home mechanics who regularly remove or install fan clutches will find the Lisle 43350 kit useful. It’s best suited to users who already have an air hammer or who perform repeated clutch jobs and want faster, more consistent results than manual wrenches alone. If you need broad size coverage for domestic and import vehicles and a durable impact‑transfer solution, this kit is designed to reduce time on the job without introducing complex adapters or specialty presses.