No.6471L - 2"(50mm) x 35.7/16"(900mm) Straight Edge

The No.6471L is a precision engineering straight edge designed to ensure the absolute flatness of engine blocks and cylinder heads during critical reassembly or complete engine overhauls.

With an extended 900mm overall length, this tool is specifically engineered for professional workshop environments to measure larger, longer engine decks where precision tolerances are non-negotiable. It allows technicians to quickly check for warping, distortion, or surface imperfections before installing head gaskets, preventing costly premature gasket failure.

Key Features

• Precision Warpage Diagnosis: Delivers a highly accurate, precise test of deck flatness when paired with a standard workshop feeler gauge.

• Built for Heavy-Duty Engines: Optimized for larger engine configurations, making it perfectly suitable for inline 6-cylinder or 8-cylinder engines that exceed 600mm in length.

• Surface Preservation: Every precision straight edge comes equipped with a dedicated protective cover and is safely packed in PE foam to maintain edge integrity and prevent accidental nicks or damage when not in use.

Engine Applications

The 900mm length is specifically scaled to span long-block assemblies over 600mm. It is ideal for heavy commercial trucks, transport fleets, 4WDs, and passenger vehicles, including but not limited to:

• Volvo Truck: D13 Series inline 6-cylinder 12.8L

• Cummins: ISX / QSX 15L (found in Freightliner Cascadia, International ProStar, and Kenworth T680)

• Scania: DC13 inline 6-cylinder 12.7L

• Mercedes-Benz: OM460 & OM457 inline 6-cylinder (12.8L / 12.0L)

• Mack: MP8 inline 6-cylinder 12.8L

• Isuzu: 6BD1 inline 6-cylinder 5.7L

• Nissan: AMC 242 (4.0L), TD42, and TD42T (4.2L) inline 6-cylinder engines

• Toyota: Land Cruiser (including HJ45LP-K)

• Ford: Expedition, F-150, and Mustang 8-cylinder 4.6L engines

• Jeep: Cherokee inline configurations

Technical Specifications

See the instruction manual here