ACL Nissan CA18/C20 Standard Size High Performance Rod Bearing Set - 4B1630H-STD

The ACL Nissan CA18/C20 Standard Size High Performance Rod Bearing Set (Part # 4B1630H-STD) is a purpose-built connecting rod bearing set engineered to meet the demands of high-RPM operation in Nissan CA18 and C20 four-cylinder engines. Whether you're refreshing a worn bottom end or building a performance motor in your 200SX, Sentra, Stanza, or Pulsar NX, ACL's Race Series rod bearings deliver the upgraded protection your engine deserves over a standard OEM replacement.

Key Features & Benefits

• High-Performance Race Series Design: ACL's Race Series connecting rod bearings are engineered to withstand higher RPM conditions than standard OEM bearings, making them an ideal choice for performance builds, engine rebuilds, and enthusiast applications on CA18/C20-powered Nissans.
• Broad Engine Compatibility: Specifically designed to fit the Nissan CA18 and C20 engine families, covering a wide range of popular 1980s Nissan models — so you can source a single trusted part number for multiple builds.
• Standard Size Fitment: This set is offered in standard (STD) size, meaning it is intended for use with standard-diameter crankshaft rod journals that have not been machined undersize — the correct choice for most stock or lightly worn cranks after proper inspection and preparation.
• Proven ACL Quality: ACL is a globally recognized engine bearing manufacturer with a strong reputation among engine builders for consistent tolerances and reliable performance across 4-, 6-, and 8-cylinder applications.
• Full Set Included: Sold as a complete rod bearing set for the CA18/C20 engine, giving you everything needed for a full connecting rod bearing replacement in one order.

Specifications

• Brand: ACL
• Part Number: 4B1630H-STD
• SKU: ACL4B1630H-STD
• UPC: 9315726152362
• Size: Standard (STD)
• Application: Nissan CA18 / C20 engine families
• Series: High Performance / Race Series

Fitment

This ACL rod bearing set is verified to fit the following Nissan vehicles equipped with the CA18 or C20 engine:

• 1984–1986 Nissan 200SX — Base
• 1984–1986 Nissan 200SX — Turbo
• 1984–1988 Nissan 200SX — XE
• 1988–1989 Nissan Pulsar NX — SE
• 1983–1986 Nissan Sentra — Base
• 1983–1984 Nissan Sentra — DX
• 1984 Nissan Sentra — SE
• 1984 Nissan Sentra — XE
• 1982–1983 Nissan Stanza — Base
• 1987–1989 Nissan Stanza — E
• 1983–1986 Nissan Stanza — GL
• 1987–1989 Nissan Stanza — GXE
• 1984–1989 Nissan Stanza — XE

Important: This is the standard (STD) size set. If your crankshaft rod journals have been machined undersize, you will need the appropriate undersize bearing set instead. Always measure your crank journals before ordering. Not sure if this fits your specific build? Contact our fitment team before ordering.

What's in the Box

• Complete ACL High Performance Rod Bearing Set for the Nissan CA18/C20 engine (standard size)

Why Buy from ThreePiece.us

• Free Shipping on Every Order: Every order ships free — no minimum purchase required and no hidden fees at checkout.
• Affirm Financing Available: Break your purchase into manageable payments with Affirm financing, so you can get your build moving without waiting.
• Expert Fitment Support: Our team has served 10,000+ customers and is available to help verify that this bearing set is correct for your specific engine and build specs. Call us at 813-535-5801 or email [email protected].
• Price Match Guarantee: Found a lower price? We offer a price match guarantee on our products.
• Enthusiast-Focused Retailer: ThreePiece.us has been serving performance enthusiasts since 2014 with a focus on getting the right part to the right build.

Frequently Asked Questions

Q: What Nissan engines does the ACL 4B1630H-STD fit?
A: This bearing set is designed for the Nissan CA18 and C20 engine families. Verified fitment includes the 200SX (1984–1988), Pulsar NX SE (1988–1989), Sentra (1983–1986), and Stanza (1982–1989) in various trim levels. See the full fitment list above for all confirmed year/model/trim combinations.

Q: Is this a standard size or oversized bearing set?
A: This is a standard size (STD) set, intended for crankshaft rod journals that are at their original factory diameter and have not been machined undersize. If your crank has been turned, you'll need a different part number in the correct undersize. We recommend measuring your journals before ordering.

Q: Is this the right bearing for a performance or turbo build?
A: ACL's 4B1630H-STD is part of their Race Series, which is specifically engineered to handle higher RPM conditions versus a standard OEM replacement bearing. The 200SX Turbo is among the verified fitment applications, making this a solid choice for enthusiast and performance-oriented engine builds on compatible CA18/C20 engines.

Q: How do I get help confirming this part fits my specific vehicle before I order?
A: You can reach ThreePiece.us fitment specialists by phone at 813-535-5801 or by email at [email protected]. Our team can help verify fitment based on your vehicle's year, model, trim, and engine spec before you place your order.