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Eagle Jeep 4.2L 5140 Forged I-Beam Connecting Rod 6.123in w/ ARP 8740 (Set of 8)

SKU: EAGSIR6123JP

Connecting Rods

EAG Conrods I-Beam - 8 Cyl...

Eagle Jeep 4.2L 5140 Forged I-Beam Connecting Rod 6.123in w/ ARP 8740 (Set of 8)

SKU: EAGSIR6123JP

Connecting Rods

EAG Conrods I-Beam - 8 Cyl...

A$793.79
IN STOCK! Est Ship 4-7 days. In stock at 1 location (5 available)

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Description

Eagle Jeep 4.2L 5140 Forged I-Beam Connecting Rod 6.123in w/ ARP 8740 (Set of 8)

Eagle's commitment to quality and service has resulted in customer loyalty and satisfaction. This, in turn, has fueled rapid growth over the years. Eagle added crankshafts to our lineup a few years later as well as expanding our offerings in Connecting Rods. Continuous design improvements and improvements in materials and manufacturing techniques have resulted in Eagle being the largest and most respected aftermarket connecting rod and crank manufacturer in the industry. We never stop researching ways to make our products lighter, stronger, more efficient to manufacture, and more diverse. When you stop moving forward, you get passed by the competition.

Additional Information

6.123" 5140 STEEL I-BEAM, 3/8" ARP 8740 BOLTS

Application Summary

JEEP

Part Type

Engine Connecting Rod


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 20:03:32

Data: v4.2 - Upd: 2026-11-09 07:06:05

Features

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: rod)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Bolts:3/8ARP 8740
Description:Eagle Jeep 4.2L 5140 Forged I-Beam Connecting Rod 6.123in w/ ARP 8740 (Set of 8)
Housing Bore:2.208
Length Center Bore To Center Bore:6.123
Material:Forged 5140 steel
Part Number:eagSIR6123JP
Pin Size:0.931
Rod Journal:2.095
Title:ESP 5140 STEEL I-BEAM JEEP (6) 4.0L/242 C.I.

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Eagle, Eagle Specialty Products
StreetFX SKU eagSIR6123JP
SFX Item ID 4052737
Accounting SKU eag-SIR6123JP
Manufacturer SKU SIR6123JP
Manufacturer UPC 793348069913
Alternative References ESP-SIR6123JP

5140 STEEL I-BEAM JEEP (6) 4.0L/242 C.I.

Why spend time and money reconditioning your stock rods—when you can upgrade to a set of Eagle SIR I-Beam connecting rods for less? They're forged from 5140 steel for outstanding strength and reliability, and they come in both press-fit and bushed pin models. Their lightweight design places less stress on the rest of your rotating assembly to increase engine life and better handle high-rpm use. The rods are X-rayed, sonic-tested, magnafluxed, and shot-peened to stress-relieve the metal. They come with 12-point ARP Wave-Lok rod bolts and are weight-matched to within two grams. The big end sizing is controlled by in-house CNC equipment to ensure precise machining and accurate fitment. Order the individual rod or set recommended for your year/make and engine application.

Product Attributes
BrandEagle Specialty Products
Manufacturer's Part NumberSIR6123JP
Part TypeConnecting Rods
Product LineEagle SIR I-Beam Connecting Rods
UPC793348069913
Connecting Rod Length Center to Center (in.)6.123 in.
Connecting Rod Beam StyleI-beam
Connecting Rod MaterialForged 5140 steel
Wrist Pin StyleFloating
Pin End Bore Diameter0.931 in.
Rod Journal Diameter (in.)2.095
Big End Bore Diameter (in.)2.2080
QuantitySold as a set of 6.
Cap Retention StyleCap screw
Big End Width (in.)1.060
Clearanced for StrokerNo
Connecting Rod Bolt BrandARP
Connecting Rod Bolt Diameter3/8 in.
Connecting Rod Bolt Material8740 chromoly steel
Fastener Tensile Strength (psi)190,000 psi
Connecting Rod Bolt Head Style12-point
Approximate Connecting Rod Weight (g)605
Pin End Width (in.)1.060 in.
Weight Matched SetYes
RemanufacturedNo
MagnafluxedYes
Connecting Rod ColorShot-peened

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