Custom Solutions

As a preferred supplier to the automotive industry for over 70 years with both standard and custom designed products, Greentree Caplugs understands the high demands and processes needed to be a moulding supplier. Manufacturing facility certified to meet ISO16949 we have the systems and resources in place to ensure parts are delivered on-time with the necessary documentation. Working with our in-house design engineers from concept through prototype to full production we can make the parts you need in a variety of materials. We offer five different moulding processes, an in-house tool room, and one of the largest staff of design engineers in the industry, to ensure your project moves smoothly through the process while meeting your lead times, cost and quality requirements.

Body and Chassis

  • Body plugs, overslam bumpers and front and rear exhaust heat shields for vehicles

Electrical System

  • Distribution coil boots
  • Spark plug boots
  • Fuse box covers
  • Electrical connector protection

Engine and Powertrain

  • Shift caps
  • Driveshaft protection
  • Housing covers
  • Transmission boots
  • Seals
  • Bushings
  • Caps and plugs

Fuel System

  • Heat shields, O-rings, caps and plugs to fit SAE fuel lines and quick connects

HVAC and Thermal Units

  • Block and condenser caps, thermal cover protection

Interior and Exterior

  • Grommets, gaskets, bumpers, dampners for small motors
  • Button and body plugs for doors, undercarriages, body panels, access panels and other open ports


  • Ultrabake™ caps, plugs, tapes and die-cuts for process temperatures up to 315°C

Steering and Suspension

  • Rod covers
  • Ball joint caps
  • Shock tower caps
  • Bleeder valve caps and plugs
  • Stabiliser bushings
  • Suspension spring seals
  • Masking parts for brake assemblies

Product Protection

Greentree has tooled a wide range of caps, plugs, finishing parts and masking devices commonly used in the automotive industry. Getting you the parts you need when you need them. All standard parts are available to sample free of charge so you can test them in your application before placing an order.

Related Products

Body Sealing | Caps | Plugs | Masking