Irwin 4050ZR Vise-grip Replacement Plier Spring 5 Pack

Product Description

The IRWIN 4050ZR is a replacement spring designed for Vise-Grip locking pliers. It restores the jaw-opening return action on worn or damaged units, extending the service life of pliers already in the field. Sold in a pack of 5, the 4050ZR suits shops and service vans that run Vise-Grip pliers hard and need a fast, low-cost fix rather than a full tool replacement. Each spring is an OEM-matched component, so fitment and function align with the original factory build. At 0.01 pounds per pack, weight is negligible. Plumbers, pipefitters, electricians, and general mechanical trades all rely on Vise-Grip locking pliers daily, making this a practical bench-stock item.

This replacement spring fits the Vise-Grip 9DR and 9SP locking plier models. It is suited to any shop or field environment where these pliers see regular use — including mechanical rooms, service trucks, and maintenance facilities. The 5-unit pack quantity supports stocking multiple spares without excess inventory commitment. Trades that carry Vise-Grip pliers as standard hand tools will find this spring a direct swap when the original loses tension or breaks under repeated cycling.

Key Features

• OEM-matched replacement spring restores original jaw-return action
• Compatible with Vise-Grip 9DR and 9SP locking pliers
• Pack of 5 supports bench stock and service van inventory
• Low per-unit cost compared to full plier replacement
• Lightweight at 0.01 pounds per pack — negligible carry weight

Compatibility

Designed for use with Vise-Grip 9DR and 9SP locking pliers as a direct OEM-style replacement spring.

Installation Notes

Spring replacement on locking pliers is a general mechanical task requiring no special tools or trade license. Inspect the plier mechanism fully before installing a new spring to confirm the spring is the only worn component. No power sources or utilities need to be shut down for hand tool maintenance. Dispose of the old spring properly, as metal fatigue can cause unexpected failure if a worn spring is reinstalled.