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The Manley Performance connecting rod identified by manufacturer part number 15042R-8 is engineered for a measured performance-engine assembly. Final compatibility depends on the exact engine, mating components, and verified dimensions, not a similar product title alone.
Key Features
- 4340 Forged Steel: Aircraft-grade alloy provides tensile strength over 200000 psi.
- ARP 2000 Bolts: Cap screws rated to 220000 psi ensure secure rod cap retention.
- Precision Specs: 6.210 inch center-to-center 2.3105 inch BE bore 0.9275 inch SE bore.
- Lightweight Build: 615 grams per rod reduces rotating mass for quicker revs.
- Fits pistons with 0.927 inch wrist pins and 2.123 inch crank journals.
- Yes they match OEM rod length and bores for all 4.6L Modular V8s in Mustang GT Bullitt and base models.
Fitment
| Fitment Status | Engine and build verification required |
|---|---|
| Required Verification | Exact engine code, dimensions, mating components, material, intended power level, and current Manley application listing |
Specifications
| Brand | Manley Performance |
|---|---|
| Manufacturer Part Number | 15042R-8 |
| Product Type | Connecting Rod |
| Fitment Type | Fitment Verification Required |
| Condition | New |
| Engine Displacement | 4.6 L |
| Fastener Material | ARP 2000 |
What's Included
One new Manley Performance connecting rod in the exact quantity and configuration stated in the specifications. Bearings, rings, pins, locks, fasteners, and installation hardware are included only when expressly listed for this part number.
About Manley Performance
Manley Performance engineers connecting rods, pistons, crankshafts, valves, valvetrain components, and related hardware for professional street, racing, and forced-induction engine builds.
Related Manley Performance Products
- Shop all Manley Performance products
- Manley Chevrolet LS 6.125 Length H Tuff Series Connecting Rod Set w/ ARP 2000 Bolts
- Manley Chrysler Hemi 6.125 Length H Tuff Series Connecting Rod Set w/ ARP 2000 Bolts (Set of 8)
- Manley Ford 2.0L EcoBoost H Beam Connecting Rod Set w/ .886 inch Wrist Pins ARP 2000 Rod Bolts
Frequently Asked Questions
How do I verify the application for Manley 15042R-8?
Match the exact Manley part number and engine code, then confirm every listed dimension, material, mating component, clearance, and intended power level before ordering.
What dimensions must match before ordering these connecting rods?
Confirm center-to-center length, big-end bore and width, wrist-pin diameter, small-end width, beam design, fastener specification, crankshaft journal, piston, and required clearances.
Can connecting rods be installed without balancing the rotating assembly?
A professional engine builder should measure every rod, verify fastener stretch or torque procedure, check bearing clearance and side clearance, and balance the complete rotating assembly.
Installation Instructions
Use the current Manley instructions for part number 15042R-8 and the engine builder's measured assembly specifications. Verify material, orientation, machining, clearances, fastener procedure, lubrication, balance, torque or stretch values, and break-in before operation.
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