997.111.119.70 Porsche Part Number Lookup: What It Is and How to Find It

If you've come across the part number 997.111.119.70 while working on your Porsche 911, you're likely looking for a specific component. This number is a genuine Porsche part identifier, and knowing how to decode it can save you time and money. This guide explains exactly what 997.111.119.70 refers to, how Porsche part numbers work, and where you can confirm the correct part for your vehicle.

Understanding Porsche Part Numbers

Porsche part numbers follow a consistent structure that reveals a lot about the part itself. The standard format is 10 digits, often grouped as XYY.ZZZ.ZZZ.ZZ (or similar variations). Each segment provides information about the model, the main group, the subgroup, and the design variant.

• The first three digits indicate the vehicle platform or model series. For example, "997" corresponds to the 997 generation of the Porsche 911, which was produced from 2004 to 2013 (with facelifts in 2009).
• The next three digits (the middle group) represent the main functional group, such as engine, transmission, body, or electrical system.
• The following three digits are the subgroup, narrowing down the specific system within that group.
• The final two digits (or sometimes three) denote the specific design variant, color, or revision level.

So when you see 997.111.119.70, you already know it belongs to a 997-generation 911. The "111" group indicates it's in the engine area—specifically, parts related to the drive belt system. "119" is the subgroup for tensioners, dampers, and related components. The ending "70" is the specific variant.

Decoding 997.111.119.70: The Part in Detail

The part number 997.111.119.70 corresponds to the drive belt tensioner for the 997 Porsche 911. This tensioner maintains proper tension on the serpentine belt that drives the alternator, power steering pump, air conditioning compressor, and other accessories. Over time, the tensioner can wear out, leading to belt slippage, noise, or even failure of driven components.

This specific tensioner is designed for most naturally aspirated 997.1 and 997.2 models (Carrera, Carrera S, etc.) with the 3.6L and 3.8L engines. It may also be used on some Carrera 4 and Targa variants. The part is genuine OEM Porsche, not an aftermarket equivalent, which means it meets the exact specifications for fit, durability, and performance.

Common symptoms of a failing belt tensioner include:

• Squealing or chirping noise from the engine bay, especially on cold starts or when accelerating
• Visible wobble or play in the tensioner pulley
• Cracks or wear on the belt itself
• Check engine light related to accessory drive issues

If you're experiencing any of these, replacing the tensioner with the genuine 997.111.119.70 part is a straightforward fix that can restore proper belt operation.

How to Look Up This Part Number

Whether you already have the number or you're trying to identify a part from your car, here are the most reliable ways to look up 997.111.119.70:

1. Official Porsche Parts Catalogs

Porsche provides online parts diagrams and catalogs through their official website or dealer networks. You can enter the part number directly to see the part's name, application, and often an illustration. This is the most authoritative source because it comes directly from the manufacturer. Most dealerships also have access to PET (Porsche Electronic Parts Catalog), which they can search for you.

2. Online Parts Databases

Several independent websites compile genuine Porsche part numbers with cross-references to model years and variants. Search for "997.111.119.70" in a search engine, and you'll find listings that confirm it's a belt tensioner. These sites often include diagrams, torque specs, and fitment notes. Just be careful to verify the source—stick with reputable Porsche specialists.

3. VIN-Based Lookup

If you want absolute certainty that the part fits your specific car, use a VIN-based lookup. Your vehicle identification number (VIN) can be entered on a Porsche dealer's parts website or a trusted third-party parts site to retrieve the exact parts installed at the factory. This method eliminates guesswork, especially if your car has had previous repairs or modifications.

4. Physical Inspection

If you have the old part in hand, compare it to images of the 997.111.119.70. Check the shape of the tensioner arm, pulley diameter, and mounting holes. Genuine parts will have the Porsche crest and the part number stamped or molded into the plastic or metal. This visual verification can save you from ordering the wrong item.

Where to Verify Authenticity

Counterfeit or aftermarket parts are a concern for high-value cars like Porsches. To ensure you're getting an authentic 997.111.119.70:

• Buy from authorized Porsche dealers or online retailers that are official distributors. They source directly from Porsche and offer warranties.
• Check packaging: Genuine parts come in Porsche-branded boxes with part number labels and sometimes holographic stickers.
• Inspect the part: Authentic tensioners have consistent paint finish, smooth pulley rotation, and clear stampings. Cheap reproductions often have rough edges or missing logos.
• Compare weight: Counterfeit parts are sometimes lighter due to lower-quality materials.
• Ask for a certificate of authenticity if available, though many dealers provide a receipt with the part number.

If you're unsure, take the part number to a local Porsche dealership and ask them to verify it in their system. They can also confirm compatibility with your VIN.

Practical Recommendations

When replacing your 997.111.119.70 drive belt tensioner, consider these tips:

• Replace the belt at the same time. The tensioner and belt work together. A new belt on an old tensioner can still cause issues, and vice versa. A matched set ensures longevity.
• Follow torque specifications. The tensioner bolts typically require 30-35 Nm (22-26 lb-ft). Over-tightening can damage the bracket or tensioner arm. Always check the official repair manual for your exact model.
• Inspect nearby components. While you have access to the front of the engine, check the alternator pulley, water pump, and idler pulleys for wear. A failed pulley can quickly ruin a new belt and tensioner.
• Use correct tools. A belt routing diagram is essential. Some tensioners require a special tool to relieve spring tension before removal. A simple ratchet and socket may not always suffice.
• Keep the receipt. Genuine Porsche parts carry a warranty (usually 2 years from the dealer). Save your proof of purchase in case the part fails prematurely.

For DIY mechanics, this is a moderate job that can be done in an afternoon with basic hand tools. If you're not comfortable working on your Porsche, a reputable independent Porsche specialist can handle the replacement quickly.

Final Recommendation

The 997.111.119.70 is a critical component for maintaining reliable accessory drive operation on your 997 Porsche 911. Use the official Porsche parts catalog or a trusted dealer to confirm fitment for your specific VIN. Always choose genuine OEM over aftermarket to ensure a perfect match and long service life. If you're ordering online, verify the seller's authorization and check the part upon arrival for authenticity. Replacing the tensioner along with a new belt is a smart investment that can prevent breakdowns and costly repairs down the road.