King Engine Bearings MB 549AM0.25 Main Bearing Set for Datsun H-20 Engine +0.25mm Oversize

The King Engine Bearings MB 549AM0.25 is a complete crankshaft main bearing set engineered for the Datsun/Nissan H-20 engine. This oversize set is manufactured at +0.25mm to restore proper crankshaft clearances in worn or reground journals, making it an essential component for any H-20 engine rebuild or overhaul.

The Nissan H-20 is a 2.0-liter inline-four OHV pushrod engine with a 5-main-bearing crankshaft design, featuring a bore of 3.433 inches and a stroke of 3.268 inches. The engine was widely used in Nissan/Datsun forklifts, light trucks, vans, and select export-market passenger vehicles. With main bearing cap torque specifications of 72–79 ft-lbs, correct bearing selection and fitment are critical for long-term engine reliability.

Key Features:

• Oversize designation: +0.25mm for use with reground or worn crankshaft journals
• Designed specifically for the Datsun/Nissan H-20 inline-four engine
• Full main bearing set covering all crankshaft journal positions
• Manufactured by King Engine Bearings, a bearing specialist founded in 1960
• Engineered to meet or exceed OEM fit, form, and function requirements
• Suitable for stock rebuilds as well as performance and industrial engine applications

King Engine Bearings has built its reputation by specializing exclusively in engine bearings, offering an extensive product range that covers automotive, light and heavy-duty truck, marine, and industrial internal combustion engines. Every bearing is manufactured using high-quality materials and precision engineering to ensure reliable performance and complete customer satisfaction.