Product Description
ARP 230-2801 FLYWHEEL BOLT KIT FOR 2001–2007 GM 6.6L DURAMAX LB7/LLY/LBZ
Lock down your Duramax flywheel with the ARP 230-2801 Flywheel Bolt Kit, engineered for 2001–2007 GM 6.6L LB7/LLY/LBZ applications. Premium ARP fasteners deliver repeatable clamping force and race-proven reliability with M16 x 1.5 threads, 12-point heads, and 1.600" under-head length. Perfect for manual or performance builds that demand strength, precision, and peace of mind.
Built from aerospace-grade alloy and heat-treated, these bolts are designed to survive high heat cycles, heavy towing, sled pulling, street performance, and track use. Replace questionable factory hardware with ARP quality and torque with confidence.
Fitment
- 2001–2004 Chevy/GMC 2500/3500 HD – 6.6L Duramax LB7
- 2004.5–2005 Chevy/GMC 2500/3500 HD – 6.6L Duramax LLY
- 2006–2007 Chevy/GMC 2500/3500 HD – 6.6L Duramax LBZ
Engine: GM 6.6L Duramax (LB7/LLY/LBZ) • Years: 2001–2007
Cross Reference & Related ARP Products
WHAT ENGINES DOES ARP 230-2801 FIT?
2001–2007 GM 6.6L Duramax LB7/LLY/LBZ.
WHAT ARE THE KEY SPECS?
M16 x 1.5 thread, 12-point head, 1.600" under-head length (UHL); 8 bolts per kit.
DO I NEED TO USE ARP ULTRA-TORQUE?
ARP recommends proper fastener lubricant and following ARP torque procedures for consistent clamping.
IS THERE A PROP 65 WARNING?
Yes. See Prop 65 notice in the specifications below.
| Brand | ARP (Automotive Racing Products) |
| Part Number | 230-2801 |
| Thread Size | M16 x 1.5 |
| Under-Head Length (UHL) | 1.600" |
| Head Style | 12-Point |
| Pieces | 8 |
| UPC | 672036041045 |
| GTIN | 00672036041045 |
| Shipping Info | Calculated at Checkout; Package dims (approx): 10.00" D × 8.00" W × 4.00" H |
| Cross Reference | ARP 230-2901 Flexplate Bolts, ARP 230-5401 Main Studs, ARP 230-4201 Head Studs, ARP 129-2503 Balancer Bolt |
| E-Codes | N/A (hardware/fastener) |
| Prop 65 | WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
