ERETOW Davco Collar & Vent Cap Wrench Set 6" & 8" — Galvanized Iron, Rubber‑Coated Handles

Two heavy‑duty wrenches (6" and 8") designed to remove and install Davco fuel filter collars and vent caps quickly and securely.

Keep diesel fuel system maintenance fast and dependable with this ERETOW two‑piece wrench set made for Davco style fuel/water separators and common heavy‑duty truck engines. Each wrench engages filter collars and vent caps with a rugged galvanized iron body and rubber‑coated handle for a non‑slip grip. The set covers the most frequent service sizes and is compatible with many Davco part numbers and engine makes used in vocational and long‑haul trucks.

Which Davco filters and part numbers does this wrench set fit?

The set includes a 6" and an 8" collar wrench sized to match popular Davco separators. It fits Davco part numbers such as 380134, 382, 482, 483, and 782, plus related Shop Pro and Fuel Pro models. These sizes correspond to collars and vent caps you commonly encounter during routine fuel service on commercial vehicles.

• 6" wrench for Davco 380134 and 382 series collar/vent caps.
• 8" wrench for Davco 482, 483, 485, 487, 488 and 782 models.
• Also suitable for equivalent Shop Pro and Fuel Pro separators.

Will these wrenches work on my truck engine (Detroit, Cummins, Navistar)?

Yes. The ERETOW set is engineered to accommodate separators used on Detroit Diesel DD13, DD15 and DD16 engines, and is also compatible with many Cummins and Navistar installations. That makes it a practical tool for fleet service, owner‑operators, and independent diesel technicians.

• Compatible with Detroit Diesel DD13, DD15, DD16 installations.
• Fits many Cummins and Navistar fuel/water separator setups.
• Useful across mixed fleets to reduce tool changes.

How durable and safe are these removal tools for field service?

Constructed from galvanized iron, the wrenches resist corrosion and hold up under heavy use in shop or roadside environments. The rubber‑coated handles improve grip and control, lowering the chance of slips that can damage collars or housing. Use caution to avoid letting the metal teeth bite into soft housings when prying or forcing movement.

• Galvanized iron body for rust resistance and strength.
• Rubber‑coated handles for secure, comfortable gripping.
• Designed for repeated collar/vent cap service during maintenance.

How do you use the 6" and 8" collar wrenches properly?

Clamp the appropriate wrench onto the filter collar or vent cap so the jaws seat evenly, then turn steadily in the removal direction until the collar loosens. The set is simple to operate and speeds routine changes, but avoid excessive force—apply steady turning torque and reposition if resistance is high. After removal, inspect the collar seal and reinstall using the same tool to ensure correct torque and seating.

• Select the wrench that matches the collar diameter (6" or 8").
• Seat jaws fully, maintain even pressure, and turn smoothly.
• Avoid gouging the housing; reposition if the wrench slips.

Who is this for? Mechanics, fleet maintenance personnel, and truck owners who service diesel fuel systems will find this ERETOW wrench set a reliable addition to their toolkit. It’s ideal for anyone needing a compact, durable solution for changing Davco‑style fuel/water separator collars and vent caps on heavy‑duty trucks and engines. If you perform regular fuel filter service or need a dependable removal tool for roadside repairs, this set covers the common sizes and fits widely used Davco models.