Product Description:
Hawks Motorsports is pleased to offer our clients the 244-2901 LS1/LS6 11mm x 1.5 12-Point Flexplate Bolt Set of 6 from ARP. This Pro Series flexplate bolt kit is designed for GM Gen III/Gen IV LS-series applications and uses an 11mm x 1.50 thread with a 0.880-inch underhead length. ARP specifies these bolts for LS-series flexplate applications.
When you're putting together an LS drivetrain, the flexplate bolts may be small, but they're definitely not the place to cut corners. The 244-2901 uses ARP's flat 12-point head and larger-than-stock shank design, giving an LS builder purpose-built drivetrain hardware for a critical connection between the crankshaft and flexplate. The Pro Series construction is forged from aerospace alloy and heat treated before final thread rolling and machining.
KEY FEATURES
- ARP Part Number: 244-2901
- Brand: ARP
- Pro Series flexplate bolt kit
- GM Gen III/Gen IV LS-series application
- 11mm x 1.50 thread
- 0.880-inch underhead length
- 12-point head design
- Chromoly construction
- Black oxide finish
- Set of 6
- 200,000 psi nominal tensile/yield specification as listed by current ARP-related product data
- Larger-than-stock shank diameter
- Flat 12-point head design
- Designed specifically for LS-series flexplate applications
PRODUCT SPECIFICATIONS
| Specification | Details |
|---|---|
| Manufacturer | ARP |
| Part Number | 244-2901 |
| Product Type | Flexplate Bolt Kit |
| Product Series | Pro Series |
| Application | GM LS-Series |
| Engine Generation | Gen III / Gen IV |
| Thread Size | 11mm x 1.50 |
| Underhead Length | 0.880" |
| Head Style | 12-Point |
| Material | Chromoly / aerospace alloy |
| Finish | Black Oxide |
| Quantity | Set of 6 |
| Rear Main Seal Application | 1-Piece |
| Nominal Strength | 200,000 psi |
| Shipping Weight | 0.52 lb |
| Shipping Dimensions | 9.60" W × 5.70" H × 1.00" D |
ARP's current product page identifies 244-2901 as an SB Chevy LS Series flexplate bolt kit and confirms Gen III and Gen IV LS applications. Current retailer specifications agree on the 11mm x 1.50 thread, 0.880-inch length, 12-point head, black oxide finish and six-bolt quantity.
VEHICLE FITMENT / FITS THE FOLLOWING MODELS
Verified Engine/Application Coverage
- GM Gen III LS engines
- GM Gen IV LS engines
- LS1
- LS2
- LS3
- LS4
- LS6
- 4.8L LS-based engines
- 5.3L LS-based engines
- 6.0L LS-based engines
ARP's primary application information identifies 244-2901 for Chevrolet LS Series Gen III and Gen IV engines. Secondary current application catalogs expand the listed LS-family applications to additional LS-based engine codes.
Common F-Body Applications
- 1998-2002 Chevrolet Camaro LS1
- 1998-2002 Pontiac Firebird / Trans Am LS1
For vehicle-specific applications, verify the engine and flexplate configuration rather than relying solely on vehicle year and model.
IMPORTANT APPLICATION NOTES AND EXCLUSIONS
- 244-2901 is an LS-series flexplate bolt kit for GM Gen III/Gen IV applications.
- Thread size is 11mm x 1.50.
- Underhead length is 0.880 inch.
- The kit contains six bolts.
- The 244-2901 is intended for 1-piece rear main seal LS applications according to current catalog specifications.
- Verify the flexplate and crankshaft configuration before installation.
- Do not substitute a different flexplate fastener based solely on thread diameter.
- ARP's application information should be used to confirm the exact application when working with an LS engine swap or non-original drivetrain configuration.
INSTALLATION NOTES
- Verify the ARP part number against the specific application before installation.
- Inspect the flexplate bolt holes and crankshaft mounting surface before assembly.
- Ensure the flexplate seats correctly against the crankshaft flange.
- Follow the current ARP installation instructions for lubrication and thread-treatment requirements.
- ARP's installation instructions for 244-2901 specify an alternating/criss-cross tightening pattern and a final torque of 85 ft-lbs using the specified lubricants.
- Always follow the latest ARP instructions supplied with the product.
FREQUENTLY ASKED QUESTIONS
What is ARP 244-2901?
ARP 244-2901 is a Pro Series flexplate bolt kit designed for GM LS-series applications.
What engines does ARP 244-2901 fit?
ARP identifies 244-2901 for Chevrolet LS Series Gen III and Gen IV applications.
Does 244-2901 fit an LS1?
Yes. Current application information identifies 244-2901 for LS1 applications, including LS1-based Gen III applications.
What thread size are the 244-2901 bolts?
The bolts use an 11mm x 1.50 thread.
How long are the bolts?
The underhead length is 0.880 inch.
What type of bolt head does 244-2901 use?
The kit uses ARP's 12-point flexplate bolt head design.
How many bolts are included?
The 244-2901 is sold as a set of six.
What material are the bolts made from?
The bolts use chromoly/aerospace-alloy construction and are heat treated before final machining and thread rolling.
What finish do these bolts have?
The 244-2901 uses a black oxide finish.
What is the recommended torque?
ARP's installation instructions for 244-2901 specify 85 ft-lbs using the specified installation lubricants and an alternating/criss-cross tightening pattern.
Is this a flywheel bolt kit?
No. The 244-2901 is specifically an automatic transmission flexplate bolt kit for LS-series applications.
