If you own a Porsche 993 and have come across part number 99335502310 in your search for replacement components, you're likely looking for a specific trim piece that has been discussed frequently on Rennlist. This article breaks down what this part is, which models it fits, where to source it, and installation advice gathered from experienced owners.
What Is Porsche Part Number 99335502310?
Part number 99335502310 is a genuine Porsche component for the 993 generation (1993–1998). It is typically a plastic trim piece—most commonly a door sill cover or a quarter panel interior trim. The exact function depends on the specific location in the vehicle, but it is generally a cosmetic or protective panel that fastens with clips or screws. Owners on Rennlist have identified it as a part that can become brittle with age, leading to cracks or broken mounting tabs.
Identifying the Correct Side and Model
This part number is usually for the left side (driver side in US-market cars) of the vehicle. Always double-check with your decade and model variant. The 993 lineup includes the Carrera, Carrera 4, Carrera S, Turbo, Turbo S, Targa, and Cabriolet. While most interior trims are shared, some differences exist between coupe and convertible models. Rennlist threads often mention that 99335502310 fits all coupe and cabriolet versions, but verify by cross-referencing your VIN or consulting a Porsche parts specialist.
Where to Buy Genuine 99335502310
Because this is a factory Porsche part, the most reliable source is an authorized Porsche dealership. Many dealerships now offer online parts catalogues where you can order directly. Independent Porsche specialists and salvage yards also stock used or new-old-stock parts. When purchasing, confirm that the packaging or part itself has the Porsche crest and a matching part number sticker. Counterfeit or reproduction parts often lack the precise fit and material quality.
Checking Part Availability and Pricing
The price for 99335502310 varies. A new OEM part from a dealer typically ranges from $80 to $150 depending on your location and shipping. Used parts in good condition can be found for $30 to $60. Rennlist members frequently recommend checking with Porsche parts suppliers like Pelican Parts or Suncoast Porsche, but you can also ask in the forum’s “Parts for Sale” section. Be prepared for backorder delays since some 993 parts are becoming discontinued.
Installation Tips from the Rennlist Community
The Rennlist forums are a treasure trove of practical advice for 993 owners. Many have documented the installation process for this trim piece. Here are the key steps they share:
- Tools Required: Trim removal tools (plastic pry bars), Torx or Phillips screwdrivers, and possibly a small flathead to release clips.
- Removal: Gently pry the old piece starting from the edge where it meets the carpet or adjacent trim. Work slowly to avoid breaking adjacent panels. Some pieces have screws hidden under caps.
- Installation: Align the new trim over the mounting points. Press firmly until all clips engage. If you encounter resistance, check that no wires or sound insulation are obstructing.
- Common Pitfalls: Breaking the clip during removal. Many Rennlist users suggest having a handful of spare clips on hand. Also, avoid overtightening screws that could crack the plastic.
Cleaning and Preparation
Before installing, clean the area where the trim will sit. Old adhesive or dirt can prevent proper seating. Use isopropyl alcohol and a microfiber cloth. Some owners also apply a tiny bit of silicone lubricant to the clips to ease insertion.
Compatibility with Other Models
While 99335502310 is specifically for the 993, there are rare cases where it may also fit the 964 or early Boxster because Porsche reused some interior clips. However, do not assume cross-compatibility. Rennlist discussions warn that aftermarket “will fit” claims are often inaccurate. Always compare the part number to your vehicle’s parts catalog.
Left vs. Right Side
This part number is for the left side. The right-side equivalent is typically 99335502309. Double-check which side you need before ordering. Many sellers list both numbers, so confirm by looking at your car. A quick test: if you replace a trim on the driver’s side, you need the left-side part.
Final Recommendation: How to Proceed
- Confirm the part number using your VIN with a Porsche dealer’s parts lookup or a reliable online database.
- Search Rennlist for threads mentioning 99335502310—you’ll find real-world installation photos and tips on avoiding damage.
- Source the part from a dealer (if you want OEM certainty) or a reputable used parts supplier. Be cautious with eBay sellers unless they provide clear photos of the part number.
- Install carefully using the Rennlist advice. If you’re not confident, consider having a Porsche mechanic do it—they handle these trims regularly.
Whether you’re restoring a 993 or simply replacing a cracked piece, knowing the specifics of 99335502310 ensures you get the right part and install it correctly. The Rennlist community is an invaluable resource, so don’t hesitate to ask for help there.