Parts for your 2017 Volkswagen Amarok-Radiator cap

2017 Volkswagen Amarok radiator cap — is there one?

Short answer: a traditional radiator cap is not used on the 2017 Volkswagen Amarok. Like most modern Volkswagens, the Amarok’s cooling system is a sealed setup that uses a pressurised coolant expansion tank with a screw-on pressure cap. The radiator itself doesn’t have a filler neck or cap.

Technical sources that confirm this design:

• Volkswagen Amarok Owner’s Manual (MY2017): Cooling system guidance points owners to the coolant expansion tank cap for checking/adding coolant and warns against opening when hot.
• Volkswagen ElsaWin/Repair Manual for Amarok (Type 2H): Engine cooling system procedures show filling, bleeding and pressure testing via the expansion tank, the radiator has no service cap.
• Volkswagen ETKA (Electronic Parts Catalogue), cooling system diagrams for Amarok 2H: lists the expansion tank and its pressure cap as the service point, the radiator is shown without a cap.

Why there’s no radiator cap on this model:

The Amarok’s cooling system is engineered as a closed, pressurised circuit. Regulation of pressure and coolant service access are consolidated at the expansion (header) tank. That screw-on cap is the pressure control device, incorporating a relief valve calibrated to the vehicle’s spec. This approach improves packaging, reduces leak points, and streamlines servicing and bleeding procedures. It’s also safer for owners and technicians, because the only place to open the system is the clearly marked tank cap, not a hot radiator neck tucked behind the grille.

What owners should do instead of looking for a radiator cap:

1. Use the factory expansion tank cap only. If it’s damaged, cracked, or its seal looks perished, replace it with an OEM-spec cap that matches the correct pressure rating for the Amarok engine variant.
2. Always check coolant level cold, and top up via the expansion tank to the “MIN–MAX” marks using the correct VW-approved coolant mix.
3. If experiencing repeated coolant loss, hard hoses when cold, or hissing around the cap, have the cap pressure-tested and the system inspected by a technician.
4. During scheduled servicing, a cooling system inspection should include the condition of the expansion tank cap, tank, hoses, and clamps, along with a pressure test and bleed procedure if any component has been opened.

This is the normal setup across late-model VW utes and SUVs, so anyone jumping from an older vehicle with a radiator neck and cap won’t find that arrangement on a 2017 Amarok.

Does a 2017 Amarok have a radiator cap?

No. It uses a pressurised expansion tank cap instead. All filling, bleeding and pressure control are handled at the coolant expansion tank, not on the radiator itself.

Where exactly is the cap on a 2017 Amarok?

Open the bonnet and look for the translucent plastic coolant reservoir (expansion tank), typically with a coloured screw cap and MIN/MAX markings on the side. That’s the only cap you use for checks and top-ups.

What pressure rating should the Amarok’s coolant cap be?

Volkswagen specifies a calibrated pressure cap for the Amarok’s engine variant. It’s typically around the 1.2–1.5 bar range in VW passenger platforms, but owners should match the rating printed on the existing cap or confirm via a VW parts catalogue or service manual for their exact VIN.