Mishimoto Sure Grip Worm Gear Clamp 120mm - Pack of 2

The Mishimoto MMCLAMP-WGP-120 Sure Grip Worm Gear Clamp is a premium 2-pack of high-torque protective clamps sized for hoses and couplers with an outer diameter between 3.94 and 4.72 inches (100mm to 120mm). Constructed from 304 stainless steel with a patented double-ridge inner shield, the MMCLAMP-WGP-120 provides a secure, damage-free, 360-degree clamping seal for silicone hoses, intake tubes, intercooler couplers, and coolant lines. Backed by the Mishimoto Lifetime Warranty.

Double-Ridge Inner Shield Technology

Standard worm gear clamps apply clamping force through a single band, which can cut into or abrade soft silicone and rubber materials under high-torque tightening. The MMCLAMP-WGP-120 uses Mishimoto's double-ridge inner shield design, which distributes concentrated compression force across two ridges for equal 360-degree clamping pressure. This protects soft hose materials from cuts and abrasions while simultaneously delivering a tighter, more reliable seal than conventional single-band clamps. The design is especially beneficial for silicone hoses, intercooler pipes, and other performance tubing where material integrity matters.

304 Stainless Steel Construction

The MMCLAMP-WGP-120 is built entirely from 304 stainless steel, chosen for its resistance to rust, corrosion, and the high-heat environment of automotive cooling, intake, and boost systems. The high-torque worm gear mechanism allows for quick, secure tightening with a standard screwdriver or socket, and the stainless construction ensures the clamp remains functional through years of heat cycling and exposure to coolant, oil mist, and road debris.

What's Included

• 2x Mishimoto MMCLAMP-WGP-120 Sure Grip Worm Gear Clamps (Pack of 2)
• Mishimoto Lifetime Warranty

Specifications

Frequently Asked Questions

What hose sizes does the MMCLAMP-WGP-120 fit?
The MMCLAMP-WGP-120 is designed for hoses and couplers with an outer diameter between 3.94 inches and 4.72 inches (100mm to 120mm). This makes it suitable for large silicone coolant hoses, intake tubes, intercooler pipes, and other large-diameter automotive hoses in that size range.

How many clamps come in the MMCLAMP-WGP-120 pack?
The MMCLAMP-WGP-120 is sold as a 2-pack, containing two individual Sure Grip worm gear clamps. This is enough to secure a single hose at both ends or two separate connections on a build.

What is the difference between the MMCLAMP-WGP-120 and a standard worm gear clamp?
Standard worm gear clamps use a smooth single band that can abrade or cut into silicone and soft rubber hoses when tightened under high torque. The MMCLAMP-WGP-120 uses Mishimoto's double-ridge inner shield, which concentrates clamping force across two protective ridges to grip the hose securely without damaging the material. It also delivers equal 360-degree compression, reducing the risk of pressure-point leaks common with single-band designs.

Is the MMCLAMP-WGP-120 compatible with silicone hoses?
Yes. The double-ridge inner shield is specifically designed to protect soft materials like silicone from the abrasion and cutting that standard clamps can cause. The MMCLAMP-WGP-120 is an ideal choice for Mishimoto silicone hose kits and any application using premium silicone tubing.

What tool is needed to install the MMCLAMP-WGP-120?
The MMCLAMP-WGP-120 can be tightened with a standard flat-head screwdriver or a socket and extension. No specialty tools are required.

What warranty does the MMCLAMP-WGP-120 carry?
Mishimoto backs the MMCLAMP-WGP-120 with their Lifetime Warranty, covering defects in workmanship and materials for the life of the product under the original owner.

Can the MMCLAMP-WGP-120 be used in high-heat applications like turbo intercooler pipes?
Yes. The 304 stainless steel construction and worm gear design are well-suited for high-heat environments including turbo intercooler couplers, boost pipes, and coolant lines. The stainless steel resists corrosion and maintains its clamping force across the temperature ranges typical of these applications.

Is the MMCLAMP-WGP-120 the same as the standard Mishimoto worm gear clamp?
The MMCLAMP-WGP-120 is part of Mishimoto's Sure Grip line, which features the protective double-ridge inner shield for soft-material hoses. This distinguishes it from standard worm gear clamps that lack the inner protection ridge. The Sure Grip designation indicates enhanced material protection compared to basic clamp designs.