Product Description
Level up your 2001–2010 GM 6.6L Duramax build with the CARRILLO DMHD6418H Pro-H connecting rod set. Each rod is precision-machined from CP-Carrillo’s proprietary VAR-certified alloy and finished to exacting tolerances, then secured with premium H-11 tool-steel 7/16" bolts for exceptional clamp load under extreme cylinder pressure. Sold as a matched set of 8 for LB7/LLY/LBZ/LMM platforms.
Why builders choose these rods: the proven Pro-H beam geometry delivers outstanding strength-to-weight, with material and heat-treat processes validated to demanding standards. Many diesel performance shops rate this set for serious power builds when combined with proper tuning, pistons, and fuel/air support.
Fitment (LB7/LLY/LBZ/LMM)- 2001–2010 Chevrolet Silverado/GMC Sierra 2500/3500 6.6L Duramax (LB7, LLY, LBZ, LMM).
- Center-to-center length: 6.418" (per vendor tech listings).
- (8) Pro-H connecting rods, matched set
- Installed H-11 7/16" rod bolts
- Duramax LML rods w/ CARR bolts: CARRILLO DM6418S
- Hybrid piston & rod kit: CARRILLO 9482SET
- Duramax performance pistons (example): CARRILLO 8771
What power level are these rods commonly used for?
They’re widely used in high-power street/competition Duramax builds. Many vendors note ~1,800 HP capability when the system is built correctly (tuning, fuel, air, and machine work as needed). Always consult your engine builder.
Are the H-11 bolts reusable?
Follow CP-Carrillo torque/bolt-stretch guidelines. Performance rod bolts are often replaced after overstress or multiple cycles—verify with your builder and CP-Carrillo documentation.
Do these fit LML (2011–2016)?
This DMHD6418H set is listed for 2001–2010 (LB7/LLY/LBZ/LMM). For LML, use the CARRILLO DM6418S set with CARR bolts.
What material are the rods made from?
CP-Carrillo’s proprietary chrome-nickel-moly-vanadium alloy, melted/forged to spec and VAR-certified; heat-treat and validation processes target high UTS and yield with low notch sensitivity.
Is there a Prop 65 warning?
Yes. See California Proposition 65 information here: P65Warnings.ca.gov.
Specifications for CP CARRILLO DMHD6418H
| Brand | CP-Carrillo |
| Part Number | DMHD6418H |
| Engine Compatibility | GM 6.6L Duramax LB7/LLY/LBZ/LMM (2001–2010) |
| Configuration | Set of 8 connecting rods |
| Beam Style | Pro-H |
| Bolt Type / Size | H-11 tool steel, 7/16" |
| Center-to-Center Length | 6.418" |
| Small End (PE) Width | ~1.540" (vendor spec) |
| Big End (BE) Width | ~1.119" (vendor spec) |
| Material | Proprietary VAR-certified alloy; performance heat-treat |
| Common Use Power Range | Built engines up to ~1,800 HP with proper supporting mods |
| Country of Origin | Made in USA (per vendor listing) |
| Shipping Info | Ships as 1 set (8 rods); standard ground (insurance available) |
| GTIN (EAN/UPC) | Not specified by manufacturer |
| Cross Reference | DM6418S (LML, CARR bolts): link | 9482SET Hybrid kit: link |
| E-codes | N/A — connecting rods (not a turbo/emissions device) |
| Turbo Series | N/A — connecting rods |
| Prop 65 | WARNING: Cancer and Reproductive Harm |
