Engines and Components› Engine Bearings

ACL Bearing

ACL Standard Size Trimetal Rod Bearings

$53.03

SKU: 4B1946H-STD

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The ACL 4B1946H-STD is a set of high-performance rod bearings designed for B-Series Honda and Acura engines. These standard-size bearings are constructed with a Trimetal material for durability.
Show original supplier description
The ACL Race Series rod bearings, model 4B1946H-STD, are engineered for high-performance applications and are designed to withstand the demands of high RPM conditions. Constructed from a high-strength Trimetal overlay plate with reduced thickness for improved fatigue resistance, these standard-size bearings do not feature flash plating to enhance bearing retention and maximize heat transfer. These rod bearings are specifically designed for Honda and Acura B-Series engines, including applications such as the B16A, B17A, B18A/B, and B20. They are suitable for high-performance and high-RPM engine builds.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandACL Bearing
Part Number4B1946H-STD
CategoryEngines and Components
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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