What does '1.0mm undersize' mean for these bearings?

This means the bearings are manufactured to be slightly smaller than the standard size. They are intended for use when the crankshaft journals have been machined down by 1.0mm to ensure proper clearance and oil film.

What is the construction of these main bearings?

These bearings are made with a bimetal construction, which uses an aluminum base. This type of construction is common for its durability and performance in engine applications.

Are these bearings a direct replacement for all Ford engines?

No, these main bearings are specifically designed for certain Ford engine codes including N4A, NE/L/N, JCC, LCJ, and LSE, commonly found in the 1971-1974 Pinto, Mustang II, and Capri models.

Specifications

Brand: King Engine Bearings
Part #: MB545AM1.0
UPC: 611500167249

King Engine Bearings Ford N4A/Ne/L/N/Jcc/Lcj/Lse (Size +1.0mm) Main Bearing Set

Name: King Engine Bearings Ford N4A/Ne/L/N/Jcc/Lcj/Lse (Size +1.0mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-n4a-ne-l-n-jcc-lcj-lse-size-1-0mm-t14-770713
Price: 64.23 USD
Availability: BackOrder

$64.23

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Fits 1971-1974 Ford Pinto. King Engine Bearings main bearing set, 1.0mm undersize, made with a bimetal aluminum base.

Key Features

Fits 1971-1974 Ford Pinto, 1974 Ford Mustang II, and 1971-1974 Mercury Capri.
Main bearing set for specific Ford N4A, NE/L/N, JCC, LCJ, and LSE engines.
Features a bimetal construction with an aluminum base.
This set is 1.0mm undersize, intended for use with a machined crankshaft.

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About this part

Product Details

If you're rebuilding the engine in your 1971-1974 Ford Pinto, Mercury Capri, or Mustang II, a solid set of main bearings is crucial. This main bearing set from King Engine Bearings is built with a bimetal construction, featuring an aluminum base for reliable performance. These bearings are sized 1.0mm undersize, which is important to note if you're machining your crankshaft to match.

King Engine Bearings is a well-known name in engine components, and this set is designed to fit specific Ford applications like the N4A, NE/L/N, JCC, LCJ, and LSE engines found in these classic vehicles. Proper bearing clearance is key to oil flow and engine longevity, and using a set like this helps ensure you're starting your rebuild on the right foot.