Covers, caps & fuse-box lids - reproduction & small batches

Snap-fit covers live a hard life: every service means flexing tabs that were engineered for a handful of cycles, in plastic that got more brittle each year. Fuse-box lids, relay covers and access caps are among the first parts to vanish from catalogues because they were pennies when new. We reproduce them with the snap features redesigned - slightly thicker, properly filleted - so the new cover survives being removed for the next few decades of services.

How we make them

Sample-based reverse engineering with particular attention to tab geometry and engagement, then production in tough nylon or resin. We routinely reinforce the exact feature that broke on yours.

Typical work: relay and fuse covers for air-cooled Porsches, BMW cowl and filter-housing covers, engine-bay caps across classic platforms.

Example parts

Frequently asked questions

Every used cover I find has the same broken tab - why?

Because the tab was the design's weak point and the material aged. We keep the outside identical and reinforce the tab inside its existing space, so it fits the same and fails no more.

Which process will you use?

Whichever suits the part: MJF nylon for tough functional plastics, high-detail resin for fine features, CNC for metal or high-load parts, vacuum casting for small series.

One part or a batch - how does pricing work?

The engineering is a one-time cost; per-unit price drops with quantity. We quote both so you can decide.

Your project stays yours.

Every part we reverse-engineer and produce is confidential and exclusive to the client. We do not resell, share or reproduce a client's parts for anyone else unless the client explicitly authorises it. NDAs available on request.

Have a covers, part to remake?

Request a quote

Model

Porsche 911 G-Series (1974-1989)

Model

Porsche 964 (1989-1994)

Guide

What 'NLA' means in car parts (and what to do about it)