Quick answer: the splash shield (under-tray or engine cover) is usually held by a mix of push rivets along its edges and a few bolts or screws at the main mounting points. Remove the bolts first, then lift each push rivet's centre pin and pull the body out. When you refit, replace any rivet that spins, has lost its pin or has a cracked head, and size new ones by measuring the hole and the thickness of the layers it clamps.
The splash shield keeps water, road spray and debris off the engine bay and lower components. It also gets scraped on kerbs, snow and speed bumps, so its clips tend to work loose. A shield hanging by two clips will drag, rattle or catch the wind at speed, which can tear it off completely.
What holds a splash shield on
| Fastener | Where it is usually found | Notes |
|---|---|---|
| Push rivets | Front edge (to the bumper cover), sides (to the fender liners) | Most common; often the ones that go missing |
| Bolts or screws | Rear edge, subframe points | Carry the main mounting; don't swap these for rivets |
| Plastic nuts or speed clips | On welded studs | Check for corrosion on the stud |
| Screw-type rivets | Mixed in with push rivets | Have a Phillips recess in the centre |
Because shields overlap the bumper and both fender liners, a single clip may pass through three layers. That is why measuring the stack matters as much as the hole.
Before you start
- Park on level ground and make sure the engine is cool.
- If you need more room, lift the vehicle and support it on axle stands rated for the job. Never work under a vehicle held only by a jack.
- Have a tray or magnetic bowl ready, and photograph the shield before removal so you know where the bolts go.
How to remove splash shield clips
- Remove the bolts and screws first. This stops the shield from dropping and cracking once the clips are out.
- Clean each rivet head. Road grime fills the gap around the centre pin.
- Lift the centre pin. A forked trim tool or thin flat screwdriver under the pin lifts it 3 to 5mm, which lets the legs collapse.
- Lever the body out evenly. Work from two sides of the head if it is tight.
- Support the shield as the last clips come out. A second pair of hands helps on large one-piece trays.
Stuck or spinning clips are covered in detail in our push rivet removal guide.
Sizing replacement splash shield clips
Do not size from the old clip. Clips stretch and deform, and a different-length clip may have been fitted in the past. Measure the vehicle instead.
Hole diameter
Use a drill bit as a gauge. A 5/16" bit slipping through means about 8mm; if only a 1/4" bit fits, you are closer to 6mm. Our push rivet size guide has the full chart.
Grip range
Add the thickness of the shield, the bumper or liner tab, and any bracket. Our 8mm automotive push rivets (8mm shank, 15mm head, 21mm length) suit a stack of roughly 2 to 6mm. The grip range guide walks through measuring it.
Refitting the shield
- Offer the shield up and start the bolts by hand. Don't tighten them yet; you need a little movement to line up the rivet holes.
- Align the overlaps. Make sure the shield sits on the correct side of the bumper cover and liner edges. Getting this order wrong is the commonest reason holes won't line up.
- Insert each rivet with the pin raised, push it through until the head is flat, then press the pin flush.
- Tighten the bolts once all the rivets are in.
- Tug-test. Pull firmly on the shield edges. Nothing should move or click.
Common problems and fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Rivet spins and won't lock | Hole enlarged or stack too thin | Check the hole; add a flat washer or repair the edge |
| Pin won't press flush | Stack too thick, or legs caught on a bracket | Re-measure; check the overlap order |
| Shield drags at speed | Missing front-edge rivets | Replace every front-edge clip, not just the missing ones |
| Rattle over bumps | One loose rivet or bolt | Tug-test each fastener to find it |
Stock up rather than reuse marginal clips
A splash shield, two fender liners and a bumper lower edge can easily add up to dozens of clips. Replacing tired clips all at once is cheaper than taking the tray off twice. Browse the automotive push rivets collection for bulk packs, or see the full range on all products.
Every 8mm option we stock is grouped in one place: the 8mm push rivets collection.
FAQ
Can I drive without a splash shield?
For a short trip it is usually fine, but the shield protects components from water and debris and helps airflow. Refit it as soon as you can.
Can I use zip ties instead of clips?
As a temporary get-home fix, yes. Long term they let the shield move, which wears the holes larger and makes a proper repair harder.
What size are splash shield clips?
It varies by vehicle and position. Measure the hole and the stack. 8mm holes are common, but don't assume.
Why are some fasteners bolts instead of clips?
Bolts are used at the main mounting points. Always put bolts back where bolts came out.
Do you list which vehicles your clips fit?
No. We give the clip's dimensions so you can measure and compare. We don't publish vehicle fitment or original part-number matches.