Gates 91075 DriveAlign Laser Pulley & Belt Alignment Tool for Serpentine Drives

Vehicle Fitment

• Universal fit - compatible with any automotive or light truck serpentine belt drive system equipped with K-section Micro-V grooved pulleys
• Suitable for use on passenger cars, trucks, SUVs, vans, and commercial vehicles with standard serpentine drive systems

Fitment Notes

• Designed for use with K-section Micro-V (poly-V / ribbed) pulleys - not intended for flat belt or timing belt systems
• Both pieces use magnetic feet; requires metal pulleys for secure magnetic seating
• Simple calibration required before first use to ensure accurate measurement

Features

• Laser line identifies both parallel misalignment and angular offset - the two most common causes of serpentine drive noise and premature belt wear
• Magnetic feet designed specifically to seat securely in K-section Micro-V pulley grooves for stable, hands-free use during diagnosis
• Anodized red finish on both the laser tool and target piece for high visibility in dark or cluttered engine compartments
• Large vertical laser beam line enables easy visual comparison against the precisely etched groove on the target piece
• Lightweight and compact design for use in tight engine bays without obstruction
• Operates up to 20 hours of continuous use on a single replaceable lithium battery
• Packaged in a blow-molded plastic carrying case to protect components during storage and transport

Specifications

• Part Number: 91075
• Tool Type: Laser Belt and Pulley Alignment Device
• Laser Type: 650nm visible red laser diode
• Laser Pattern: Vertical line
• Battery Type: Replaceable lithium
• Operating Time: Up to 20 hours continuous
• Compatible Belt Type: K-section Micro-V (serpentine / poly-V)
• Finish: Anodized red
• Case Type: Blow-molded plastic carry case
• Cross Reference: NAPA Belts/Hose NBH075, ACDelco 91075
• UPC: 770076000000

Included Components

• 1x Laser Tool (anodized red, magnetic feet)
• 1x Target Piece (anodized red, magnetic feet, precision-etched alignment groove)
• 1x Blow-Molded Plastic Carry Case

Product Description

The Gates 91075 DriveAlign Laser Alignment Device is a professional-grade diagnostic tool designed to detect pulley misalignment in serpentine belt drive systems quickly and accurately. Using a 650nm red laser diode that projects a vertical line, the tool works in tandem with a magnetic target piece - both components seat securely in K-section Micro-V pulley grooves via integrated magnetic feet. When the laser beam aligns with the etched groove on the target, the pulleys are in plane; any deviation immediately reveals parallel or angular offset that would otherwise cause belt noise, tracking issues, or accelerated wear.

Both the laser tool and target are anodized red for high visibility in dim or crowded engine bays, and the kit stores neatly in its included blow-molded plastic case. The tool runs on a single replaceable lithium battery rated for up to 20 continuous hours of operation. Universal in application, the Gates 91075 is equally at home in a professional shop or a well-equipped home garage for use on any serpentine belt-driven passenger car, truck, or SUV.