Acura Honda Bumper & Wheel Well Liner Push-Type Retainer | 21706
The South Mountain Supply 21706 is a nylon push-type trim retainer for Acura and Honda vehicles, used to secure bumper fascias and wheel well liners. The 20mm head provides a broad bearing surface that prevents pull-through in the plastic liner material, and the 14mm stem accommodates thicker panel assemblies.
Specifications
| Spec | Detail |
|---|---|
| Type | Push-Type Retainer |
| Application | Bumper & Wheel Well Liner |
| Material | Nylon |
| Head Diameter | 20mm |
| Hole Size | 10mm |
| Stem Length | 14mm |
| Color | Black |
| SMS Part# | 21706 |
Vehicle Fitment
| Make | Application | Notes |
|---|---|---|
| Acura | Bumper fascia & wheel well liner | Verify OEM number matches 21706 before ordering |
| Honda | Bumper fascia & wheel well liner | Verify OEM number matches 21706 before ordering |
Cross-References
| Source | Part Number |
|---|---|
| SMS Part# | 21706 |
| Hole Size | 10mm |
| Head Diameter | 20mm |
South Mountain Supply stocks the 21706 push-type retainer ready to ship. All quantities ship from our warehouse — no dropshipping delays.
What applications use the 21706 on Acura and Honda vehicles?
The 21706 is used for bumper fascia attachment and wheel well liner retention on various Acura and Honda platforms. The larger 10mm hole size and 14mm stem are sized for locations where two layers of material — such as a liner behind a fascia — stack together, requiring a longer stem to pass through both panels and lock securely.
What is the difference between a 10mm hole retainer and an 8mm hole retainer?
The hole size determines which mounting points the retainer fits. A 10mm retainer like the 21706 fits larger mounting holes typically found in bumper assemblies and wheel well liners on Acura and Honda vehicles. Using the wrong hole size results in a loose fit or an inability to install the retainer at all. Always match the hole size when replacing retainers.
How do I replace bumper retainers on a Honda or Acura?
Use a trim removal tool to pry out the old or broken retainers from the bumper or liner. Clean the mounting hole of any broken plastic fragments. Press the new 21706 retainer into the hole until the head seats flush with the panel surface. If the retainer uses a two-piece drive-pin design, press the center pin down after seating the body to lock it.
What pack size should I order?
The 21706 is available in packs of 15, 30, 60, and 90. A pack of 15 is appropriate for a single repair job on one bumper or liner section. A pack of 30 covers a full bumper and both wheel well liners on most Honda models. Packs of 60 and 90 provide the best value for shops doing routine maintenance on Honda and Acura fleets.
Will nylon retainers hold up in the wheel well environment?
Yes — nylon is the standard material for automotive trim retainers precisely because it resists water, road salt, UV exposure, and the temperature extremes found in wheel well and underbody locations. Quality nylon retainers maintain their retention force through repeated temperature cycling without becoming brittle or warping.