SKU: 912-0011 | UPC: 672036032388
ARP M11 x 2.00 Thread Cleaning Chaser Tap for GM LS-Series Engines (1997-2023)
This ARP thread cleaning chaser tap restores M11 x 2.00 threads in GM LS-series engine blocks and cylinder heads. It removes debris, corrosion, and minor damage to prepare surfaces for ARP head studs or bolts. Perfect for rebuilds on Corvettes, Camaros, trucks, and SUVs with LS1, LS2, LS3, LS6, LS7, L92, and similar engines.
Key Features
- Exact Thread Match: Matches OEM M11 x 2.00 pitch in LS blocks and heads for seamless ARP fastener installation
- Chaser Design: Cleans without cutting new threads to maintain stock hole dimensions and thread strength
- High-Strength Steel: Built from premium tool steel to withstand heavy use in professional shops
- Precision Ground: Sharp flutes remove contaminants efficiently while preventing thread distortion
- ARP Engineering: Developed alongside ARP head fasteners for reliable performance in high-horsepower builds
Product Notes
- Inspect block and head threads for major damage before chasing
- Apply light oil during use and clean tap after each engine
- Compact design fits standard 1/2-inch tap wrench or handle
Installation Notes
- Professional installation recommended.
- Use with ARP Ultra-Torque lubricant on cleaned threads for assembly
- Fits all ARP head stud kits for LS applications including 234-4317 and 234-4320
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2004 | Chevrolet | Corvette | Base, Z06 (LS1) |
| 1998-2002 | Chevrolet | Camaro | Z28, SS (LS1) |
| 1998-2002 | Pontiac | Firebird | Formula, Trans Am (LS1) |
| 2004-2006 | Pontiac | GTO | All (LS1/LS2) |
| 2005-2013 | Chevrolet | Corvette | C6 Base, Z06 (LS2/LS3/LS7) |
| 1999-2020 | Chevrolet | Silverado 1500 | 5.3L, 6.0L, 6.2L (LM7, LQ4, L92, L9H) |
| 1999-2020 | GMC | Sierra 1500 | 5.3L, 6.0L, 6.2L (LM7, LQ4, L92, L9H) |
| 2009-2015 | Cadillac | CTS-V | All (LS3/LSA) |
Why Choose ARP?
- ARP fasteners power NHRA Pro Stock and Top Fuel engines worldwide
- ARP tools match fastener quality for consistent assembly results
- ARP designs from racer input for real-world high-stress reliability
Frequently Asked Questions
- Q: Which LS engines use M11 x 2.00 threads?
A: All Gen III and Gen IV LS engines including LS1, LS2, LS3, LS6, LS7, L92, L99, and truck variants like LM7 and LQ9 retain factory M11 x 2.00 head bolt holes - Q: What material construction does this chaser use?
A: High-speed steel with ground flutes for durability, heat resistance, and precise cleaning over multiple engine builds - Q: Is this required for ARP head stud installation?
A: ARP recommends chasing threads on every LS rebuild to guarantee full thread engagement, proper torque, and stud longevity
Shipping & Handling
- Method: UPS Ground or USPS Priority Mail
- Availability: In stock – ships same or next business day
- Packaging: Protective plastic sleeve in 7 x 3 x 1 inch box
- Weight: 0.4 lbs
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