Used Truck Oil Filler Caps & Filler Necks for European HGV Engines

Used truck oil filler caps & filler necks for European HGV engines

Oil filler caps and filler necks are small but critical components on a heavy truck engine. They seal the oil fill point, help prevent leaks and contamination, and in many cases integrate breathers or connections to crankcase ventilation systems. On modern European HGVs the oil filler can be located directly on the rocker cover or on a remote filler neck mounted higher in the engine bay.

In this category we offer used OEM truck oil filler caps and filler necks removed from complete donor vehicles. Typical examples include filler pipes and caps for Mercedes-Benz Actros MP4, Volvo FH/FM, MAN TGX/TGS and DAF XF/CF Euro 5–6 trucks, as well as oil filler modules for other popular European brands.

What you will find in the Oil Filler Caps category

Stock in the Oil Filler Caps category changes as new donor trucks arrive, but it typically includes:

• simple oil filler caps that lock directly into the rocker cover or cam cover;
• complete oil filler necks with pipe, mounting flange and cap, often used to bring the fill point higher in the engine bay;
• integrated oil filler modules with breather or ventilation connections, commonly used on newer Euro 5–6 engines;
• brand-specific filler housings designed for Mercedes Actros, Volvo FH/FM, MAN TGS/TGX and DAF XF/CF engines;
• selected associated components such as gaskets, seals or mounting brackets supplied together with the filler neck or module, as shown in the photos.

Each listing includes clear photos, OE/OEM part numbers where available and donor vehicle details so you can compare filler neck shape, cap type and mounting style with the parts fitted to your own truck.

Truck brands & typical applications

Most oil filler caps and filler necks in this category are taken from mainstream European heavy trucks, including:

• DAF XF and CF long-haul and distribution tractors and rigids;
• MAN TGS and TGX with D20, D26 and later Euro 6 engine families;
• Mercedes-Benz Actros, Antos and Arocs with modern Euro 5–6 engines;
• Volvo FH and FM long-distance and regional haulage vehicles;
• other brands such as Scania, Iveco and Renault Trucks when suitable donor vehicles are available.

Because these are genuine OEM components removed from complete trucks, individual filler caps and necks are usually matched to a specific engine family, rocker cover design and emission standard.

Why truck oil filler caps matter

Correct oil filler components are important for:

• sealing and cleanliness – a good cap prevents oil splashes and keeps dust and moisture out of the engine;
• crankcase ventilation – many modern filler modules have integrated breathers or hose connections that must seal properly;
• leak prevention – damaged caps or necks can cause oil leaks onto the engine or chassis, leading to contamination and possible MOT/inspection failures;
• safe servicing – a correctly sized and positioned filler neck makes routine oil changes quicker and cleaner for workshops and drivers.

Typical reasons to replace an oil filler cap or neck

Common reasons to order parts from this category include:

• cracked or broken caps that no longer seal properly or have missing tabs;
• damaged filler necks caused by impacts during servicing or accidents;
• oil leaks or fumes around the filler area due to worn seals or warped plastics;
• incorrect or non-original parts fitted previously that do not match the engine cover or neck design;
• restoring a truck after engine or rocker cover replacement with the correct OEM filler assembly for that engine code.

How to choose the correct truck oil filler cap

To minimise fitting issues and ensure proper sealing, please check the following details before ordering:

• truck brand, model and engine code – for example DAF XF106, MAN TGX Euro 6, Mercedes Actros MP4, Volvo FH4;
• filler location – directly on the rocker/cam cover or on a remote filler neck;
• cap design – bayonet, threaded or push-in, and whether any special tools are required;
• neck diameter and mounting pattern – including bolt hole spacing where a flange is used;
• breather / hose connections – number, size and orientation of any vent or return hoses on the module;
• OEM part numbers printed or moulded into your existing cap or neck, matched against the references shown in the product description.

If you are unsure, you can contact us with your VIN or registration number and clear photos of your existing filler cap and neck. Our team can help you confirm compatibility before you place an order. For general guidance, see How to Find the Right Part.

Used OEM oil filler caps from dismantled trucks

VRA Truckparts specialises in used OEM truck parts sourced from carefully selected donor vehicles. Trucks are inspected and documented before dismantling so that engines and ancillary components can be assessed. During dismantling, our technicians remove oil filler caps, necks and modules, check housings and seals for visible damage and reject items that do not meet our standards.

Usable parts are cleaned externally, labelled with OEM references where available and stored under cover in our warehouse ready for dispatch. To learn more about how we work and our approach to recycling, please visit Our Dismantling & Quality Process and Sustainability & Recycling.

Related engine & service categories

If you are working on engine servicing or repairs, you may also want to browse:

• Engines & Components – main section for used truck engines and engine ancillaries;
• Cylinder Heads – complete heads and related components;
• Valve Covers – rocker/cam covers that often house the oil filler point;
• Engine Cooling – radiators, fans and other cooling parts working together with the lubrication system;
• How to Order – step-by-step guide to placing orders on our website.

Delivery, payment & returns

Most oil filler caps and filler necks can be shipped as well-packed parcels with tracked delivery across the UK and EU. For details of available services, transit times and costs, please see our Delivery & Shipping page.

Information about payment methods, VAT handling and returns is available on Payment & VAT and Returns & Refunds. If you need to combine oil filler components with other engine or service parts for the same vehicle, our team will be happy to help you build a complete order.