Product Description
The Boostline DO7559-575 Dodge 5.9/6.7L Cummins 7.559" Connecting Rod Set is built for serious power and reliability in high-boost street, towing, and competition builds. Forged from ultra-strong 4340 steel and engineered with Boostline’s patented three-pocket I-beam design, these rods deliver exceptional big-end stability and are rated for 2,000+ HP and 2,000+ ft-lbs of torque when paired with the right rotating assembly and tuning.
Each set of six connecting rods is equipped with 12mm ARP 2000 fasteners and premium APMCO bronze pin bushings, then finish-machined and inspected using aerospace-grade CMM equipment. Every individual rod includes a 26-point CMM inspection report, so you know your bottom end geometry is right where it needs to be for high-RPM, high-cylinder-pressure Cummins builds.
If you’re stepping up to big single or compound turbos, heavy towing, sled pulling, or drag racing with your 5.9L or 6.7L Cummins, this Boostline DO7559-575 set is designed to be the foundation of a stable, repeatable bottom end that can handle extreme cylinder pressure and boost.
Key Features
- Forged 4340 steel I-beam construction for extreme strength in diesel applications
- Patented three-pocket design for dramatically improved big-end stability under high tensile loads
- Rated for ~2,000 HP and 2,000 ft-lbs of torque with proper supporting mods
- 12mm ARP 2000 rod bolts included for ~20% increased clamping force vs. typical OE hardware
- APMCO bronze pin bushings for excellent wear resistance at high RPM and high load
- Each rod comes with a 26-point CMM inspection report for precise geometry control
- Engineered specifically for Dodge/Ram 5.9L & 6.7L Cummins builds from mild street to all-out competition
Fitment
- 1989–1993 Dodge D/W 250 & 350 — 5.9L Cummins 12V (VE)
- 1994–1998 Dodge Ram 2500/3500 — 5.9L Cummins 12V (P7100)
- 1998.5–2002 Dodge Ram 2500/3500 — 5.9L Cummins 24V (VP44)
- 2003–2007 Dodge Ram 2500/3500 — 5.9L Cummins 24V (common-rail)
- 2007.5–2018 Dodge/Ram 2500/3500/4500/5500 — 6.7L Cummins 24V
Notes: Professional machining, balancing, and clearancing are required. Always verify rod journal, pin size, and bearing clearances during assembly. Intended for performance use—this is not an “install and go” stock replacement part.
Recommended Mahle Bearing Upgrades (CPP Diesel Only)
Pair your Boostline DO7559-575 rods with quality Mahle rod bearings from CPP Diesel to match your power level and bearing clearance targets:
- For 2003–2018 common-rail 5.9L/6.7L Cummins (fractured-cap rods):
- For 1989–2002 5.9L Cummins (non-fractured machined-cap rods):
Choose H-Series bearings for higher cylinder pressure and RPM where extra overlay strength and enlarged chamfers are needed, or P-Series where OE-style durability and quiet operation are the priority.
Specifications for Boostline DO7559-575
| Attribute | Value |
|---|---|
| Brand | Boostline |
| Part Number | DO7559-575 |
| Engine Compatibility | 1989–2018 Dodge/Ram 5.9L & 6.7L Cummins (performance builds) |
| Rod Type | I-Beam with patented three-pocket big-end design |
| Material | Forged 4340 steel |
| Center-to-Center Length | 7.559 in. |
| Journal Size | 2.710 in. |
| Pin End Bore | 1.575 in. |
| Big End Width | 1.526 in. |
| Wrist Pin Bushing Width | 1.526 in. |
| Bolt Diameter / Hardware | 12mm ARP 2000 rod bolts (included) |
| Average Gram Weight | 1958 g (per rod) |
| Configuration | Set of 6 connecting rods |
| UPC | 193564265968 |
| GTIN | 00193564265968 |
| Package Dimensions (WxHxD) | Approx. 15.0" × 8.0" × 8.0" |
| Shipping Weight | Approx. 18 lb (boxed) |
| Shipping Method | Standard ground; shipping calculated at checkout |
| Power Rating (Guideline) | Up to ~2,000 HP / 2,000 ft-lbs with correct supporting mods and tuning |
| Prop 65 Warning | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FAQ
Will these Boostline DO7559-575 rods fit my 5.9L or 6.7L Cummins?
Yes. They are designed for performance builds based on 1989–2018 Dodge/Ram trucks with 5.9L or 6.7L Cummins engines. You still need to verify rod journal size, pin size, piston compatibility, and bearing clearances during assembly.
How much power can the DO7559-575 rods support?
Boostline’s three-pocket 4340 design and ARP 2000 hardware are engineered around ~2,000 HP and 2,000 ft-lbs of torque when used with the right pistons, bearings, fasteners, and tuning. Always work with a reputable engine builder for parts selection and safety margin.
What rod bearings should I use with these rods?
For 2003–2018 common-rail engines with fractured-cap rods, we recommend Mahle performance bearings like CB-1873H (STD), CB-1873HX (extra clearance), or CB-1873AP (P-Series STD) available on CPP Diesel. For 1989–2002 engines with machined-cap rods, Mahle CB-1413H or CB-1413P are excellent choices. Always measure and set your oil clearance based on your crankshaft and intended use.
Are these rods a direct drop-in replacement for stock builds?
No. These are performance rods intended for engines that are being professionally machined, balanced, and assembled. You must verify side clearance, bearing clearance, piston-to-valve and piston-to-head clearance, and overall rotating assembly balance.
Do the rods come with bolts and a CMM report?
Yes. Each DO7559-575 rod includes 12mm ARP 2000 fasteners and is finish-machined and checked with a 26-point CMM inspection. A detailed CMM report is included so your engine builder can confirm critical dimensions.
Can I use these rods in a daily-driven tow rig?
Absolutely. Many customers use Boostline rods in heavy towing and work-truck builds. As long as the engine is assembled correctly with appropriate clearances, oiling, and tuning, these rods offer a robust safety margin for high cylinder pressure and repeated heavy-load use.
