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Factory-Grade Platinum Multi-Ground Spark Plugs for Audi 3.2 V6 and 4.2 V8 Engines
The NGK PFR7W-TG is a platinum multi-ground spark plug engineered to meet the original equipment ignition specification for Audi 3.2 and 4.2 engines including the A4, A6, RS4, and R8. Each PFR7W-TG features a platinum center electrode that
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extends service life compared to conventional copper plugs, while the multi-ground design provides a reliable ignition path under varying fuel mixture and engine load conditions. This listing includes a factory-sealed box of 4 NGK PFR7W-TG spark plugs, covering a complete bank on V8 applications or a full set on inline applications.
Key Features
- Platinum tip center electrode for extended service life
- Multi-ground electrode design for consistent ignition under varying load
- OEM direct replacement for Audi 3.2 V6 and 4.2 V8 applications
- M14x1.25 thread pitch, 19mm thread length
- NGK Stock Number: 5592
- UPC: 087295155929
- Sold as a box of 4 plugs
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2002-2008 | Audi | A4 | 3.0L V6 |
| 2002-2005 | Audi | A4 | 3.0L V6 Quattro |
| 2005-2008 | Audi | A4 | 3.2L V6 |
| 2005-2008 | Audi | A4 | 3.2L V6 Quattro |
| 2002-2005 | Audi | A6 | 3.0L V6 |
| 2002-2005 | Audi | A6 | 3.0L V6 Quattro |
| 2006-2008 | Audi | A6 | 3.2L V6 Quattro |
| 2006-2011 | Audi | A6 | 4.2L V8 Quattro |
| 2006-2008 | Audi | RS4 | 4.2L V8 Quattro |
| 2008-2012 | Audi | R8 | 4.2L V8 |
Specifications
| Detail | Value |
|---|---|
| Part Number | PFR7W-TG |
| NGK Stock Number | 5592 |
| Brand | NGK |
| Type | Platinum Multi-Ground Spark Plug |
| Electrode Material | Platinum Center |
| Thread Size | M14x1.25 |
| Thread Length | 19mm |
| Quantity Per Box | 4 Plugs |
| UPC | 087295155929 |
| Condition | New |
What's Included
- Factory sealed box of 4 NGK PFR7W-TG platinum spark plugs
About NGK
NGK Spark Plugs is the world's leading manufacturer of spark plugs and oxygen sensors, with OEM supply agreements with every major automaker. NGK's iridium, platinum, and standard spark plug lines are trusted across millions of vehicles globally for their reliability, precise gap specifications, and superior ignition performance.
Frequently Asked Questions
What is the PFR7W-TG?
The NGK PFR7W-TG is a platinum multi-ground spark plug with NGK Stock Number 5592. It is the OEM-specified spark plug for Audi 3.2 V6 and 4.2 V8 engines including the A4, A6, RS4, and R8. This listing is for a factory box of 4 plugs.
How many NGK PFR7W-TG spark plugs does a complete engine service require?
Audi 3.2 V6 engines require 6 spark plugs per full service. Audi 4.2 V8 engines require 8 spark plugs per full service. This listing contains a box of 4 NGK PFR7W-TG plugs. V6 owners need 1.5 boxes and V8 owners need 2 boxes for a complete service.
What is the NGK stock number for the PFR7W-TG?
The NGK stock number for the PFR7W-TG is 5592. When cross-referencing or ordering replacement plugs, use either the part number PFR7W-TG or stock number 5592 to confirm you have the correct application.
What is the thread size and reach for the NGK PFR7W-TG?
The NGK PFR7W-TG uses an M14x1.25 thread pitch with a 19mm thread length. Always verify your Audi's specific spark plug specification before installation to confirm these dimensions match your cylinder head.
Are the NGK PFR7W-TG plugs pre-gapped from the factory?
NGK spark plugs are manufactured within their specified gap tolerances and are designed to be installed without adjustment on OEM applications. Always verify the gap with a feeler gauge against the factory Audi specification before installation.
How often should I replace the PFR7W-TG spark plugs on my Audi?
NGK platinum multi-ground spark plugs are typically rated for 30,000 to 60,000 mile service intervals depending on the engine application. Follow the Audi factory maintenance schedule for your specific model year for the recommended replacement interval.
Will the NGK PFR7W-TG work on turbocharged Audi applications?
The PFR7W-TG is listed for naturally aspirated Audi 3.2 V6 and 4.2 V8 applications. For turbocharged Audi variants, verify the correct NGK plug specification using NGK's application guide for your specific year and engine code.
Is the NGK PFR7W-TG the same as OEM Audi spark plugs?
NGK is an OEM supplier to Audi and Volkswagen for spark plug applications across multiple model lines. The PFR7W-TG meets or exceeds the original equipment specification for the listed Audi 3.2 and 4.2 engine applications.
Installation Instructions
- Allow the engine to cool completely before removing spark plugs.
- Remove the engine cover and disconnect the ignition coil packs from each cylinder.
- Using a spark plug socket and extension, remove the OEM spark plugs one at a time.
- Verify the gap on each new NGK PFR7W-TG against the Audi factory specification.
- Apply anti-seize to the plug threads if recommended for your application and hand-thread each plug to prevent cross-threading.
- Torque each plug to the Audi factory specification using a torque wrench.
- Reinstall the ignition coil packs and engine cover.
- Start the engine and verify smooth idle before returning to normal use.
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