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Manley Small Block Chevrolet 3/8in ARP Custom Age 625+ Cap Screws (Set of 4)

SKU: MAN42321-4

Connecting Rod Bolts

MAN Connecting Rod Bolts...

Manley Small Block Chevrolet 3/8in ARP Custom Age 625+ Cap Screws (Set of 4)

SKU: MAN42321-4

Connecting Rod Bolts

MAN Connecting Rod Bolts...

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A$420.67 A$449.53
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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Description

Exclusive Manley Performance flash sale discount at StreetFX!

Talk about timing! This is a limited offer while stocks last on various Manley Performance part numbers. There's never been a better time to buy your Manley Performance upgrades, so what are you waiting for?!

This item is currently on sale!

Same-day payment required to secure promotional price. Promotions may end early or be extended based on stock levels or other factors.

Rod Bolt Set

Important excerpt from the ARP catalog regarding proper fastener installation: “The importance of tightening fasteners to their required preload cannot be emphasized enough. If a fastener is not preload cannot be emphasized enough. If a fastener is not tightened properly, the fastener will not apply the required preload on the application it is being used for and may become susceptible to failure. Conversely, if a fastener is over tightened and stretched too much, it becomes susceptible to failure by exceeding it’s maximum yield point.”

Part Type

Engine Connecting Rod Bolt

Data: v4.2 - Upd: 2026-11-11 12:34:32

Features

  • Ideal for high-horsepower, high-RPM street and racing applications
  • Precision thread rolling and heat treatment for maximum tensile strength
  • Premium ARP-manufactured rod bolts engineered for high clamp load and reliability
  • Provides consistent preload when installed using recommended stretch method

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:25:19

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

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Manley Performance, Manley
StreetFX SKU man42321-4
SFX Item ID 4060323
Accounting SKU man-42321-4
Manufacturer SKU 42321-4
Manufacturer UPC 807298017013
Alternative References MAN-42321-4

Cap Screws, Connecting Rod, ARP Custom Age 625 Plus, 3/8 in, Set of 4

Big-time clamping force for your connecting rods! Manley replacement connecting rod bolts feature a .0005 to .0070 in. interference fit to guarantee rod cap alignment and actually strengthen the connecting rod. They are available in ARP2000 alloy with an 8740 chromoly steel. Nuts and lubricant are included.

Product Attributes
UPC807298017013
BrandManley
QuantitySold as a set of 4.
Part TypeConnecting Rod Bolts
Thread Size3/8 in.-24
Product LineManley Replacement Connecting Rod Bolts
Nuts IncludedNo
Rod Bolt Nut Style12-point
Cap Retention StyleCap screw
Rod Bolt Head StyleE
Underhead Length (mm)40.64mm
Underhead Length (in.)1.600 in.
Manufacturer's Part Number42321-4
Connecting Rod ManufacturerManley
Connecting Rod Bolt Diameter3/8 in.
Connecting Rod Bolt MaterialARP Custom Age 625 Plus
Fastener Tensile Strength (psi)260,000 psi

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