Aluminium Tank Cap for Oil, Water, Radiator, Universal Fit

Upgrade your tanking systems with the Aluminium Tank Cap for Oil, Water, Radiator — a universal-fit solution engineered for durability and a reliable seal. This cap is machined from billet aluminium, delivering a robust, corrosion-resistant component for oil tanks, water reservoirs, radiators, and coolant systems across a wide range of applications.

Designed to fit OEM coolant tanks with threaded fill necks, this cap combines practicality with a sleek, engine-bay-friendly look. The scalloped design adds a distinctive touch while the clear anodized finish provides lasting shine and resistance to harsh temperatures and chemicals. Available for hole sizes 1", 1.5", 2", and 3" (verify your tank’s hole size from the product images before ordering) — ensuring you get a precise, snug fit every time. The kit comes with a pressure cap to give you a complete, ready-to-install closure.

From the workshop to the driveway, this cap is a versatile upgrade for custom tanks, splash bowls, bottles, and more. It’s a reliable choice for fuel oil tanks, fuel surge tanks, water tanks, radiators, coolant reservoirs, and other tanks that require a threaded-cap closure. Built to ISO 9001 standards by XUZHONG in Mainland China, it combines precise machining, durable finish, and practical versatility in one compact component.

Benefits & Tips

• Enhance leak resistance and durability in oil, water, or coolant applications with a billet aluminium cap designed for threaded fill necks.
• Use as a reliable replacement cap in custom tanks or engine-bay upgrades where a scalloped, polished finish adds both style and function.
• Before ordering, double-check the hole size (1", 1.5", 2", or 3") using the product images to ensure a perfect fit and prevent cross-threading during installation.

Product specifications

• Brand: XUZHONG
• Model Name: OC-1103-2-BK
• Item Type: Tank Covers
• Material: Aluminium
• Color: Black
• Finish: Clear anodized, polished surface
• Sizes available: Hole sizes 1", 1.5", 2", 3" (OD) — refer to tank hole size
• Application: For oil fuel tanks, water tanks, radiators, coolant/ cooler reservoirs; suitable for custom tanks, splash bowls, bottles, and other threaded-fill neck tanks
• Features: Machined from billet aluminium; fits OEM coolant tanks with threaded fill neck; scalloped design; polished surface; comes with pressure cap
• Origin: Mainland China
• Certification: ISO 9001
• Weight: 0.3 (unit not specified in data)

Package includes:

• 1x Oil Tank Cap Kit

Warnings/Reminders

Please double check your tank’s hole size before you order. Sizes 1", 1.5", 2", and 3" refer to the tank hole diameter; refer to the product images for exact sizing and compatibility.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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