We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver aluminum vented fuel cap with threaded neck and chain cross bar, lockable with two keys

Velvac

Velvac 600181-1 Aluminum Fuel Cap Vented 4 In

SKU CH-R7Y4-NMANW

Threaded aluminium fuel cap with lock, chain and two keys for 4-inch diesel tank necks

  • TypeAutomotive Accessories
  • ColorSilver
  • Vented aluminum cap reduces pressure build-up in diesel tanks
  • 4 11/32 inch neck diameter fits standard fuel openings
  • Lockable design with two keys secures fuel against theft
  • Threaded chain and cross bar keeps cap attached during refuelling
  • Silver aluminum construction resists corrosion for long service life

Aluminium fuel cap for diesel tanks

The Velvac 600181-1 is a silver aluminium cap with a 4 11/32 in neck diameter and 4 3/8 in neck length. It threads onto the filler neck and includes a chain with cross bar so the cap stays attached during refuelling. Two keys are supplied for the integrated lock. The cap is vented no and suits diesel fuel only.

Replaces missing or damaged factory caps

Swap this in when the original cap is lost, the lock cylinder fails or the gasket no longer seals. The threaded design matches the 4 11/32 in neck so installation is direct without adapters. The jump is worth it when a secure, lockable closure is required for compliance or theft prevention. It does not suit petrol systems or smaller neck sizes.

Handles standard diesel filler necks

The 4 11/32 in diameter and 4 3/8 in length cover common heavy-duty truck and equipment tanks. Lockable operation with two keys gives controlled access for fleet use. It runs out on necks with different thread pitch, non-standard diameters or where a vented cap is specified by the manufacturer. Not for petrol, racing or marine fuel systems.

Highlights

  • Vented aluminum cap reduces pressure build-up in diesel tanks
  • 4 11/32 inch neck diameter fits standard fuel openings
  • Lockable design with two keys secures fuel against theft
  • Threaded chain and cross bar keeps cap attached during refuelling
  • Silver aluminum construction resists corrosion for long service life

Specifications

BrandVELVAC
TypeAutomotive Accessories
ColorSilver

Questions about this item

What is the neck diameter of the Velvac 600181-1 fuel cap?

The neck diameter is 4 11/32 inches, so the tank opening must match this size for a proper seal.

How do I install the Velvac 600181-1 and what step is often missed?

Thread the cap onto the 4 3/8 inch neck until the vent seats, then attach the cross-bar chain to the truck body so the cap cannot be lost.

What maintenance does the Velvac 600181-1 require over time?

Inspect the vent screen for debris each season, lubricate the lock cylinder with graphite powder, and replace the cap if the gasket hardens or cracks.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.