Toyota 13711-58020 Intake and Exhaust Valve Set

Technical specification for intake and exhaust valve set compatible with Toyota 13B and 13B-T 3.4L inline-four diesel engines. The set comprises four intake valves and four exhaust valves (eight pieces total). Exhaust valve dimensions: head diameter 41 mm, stem diameter 9 mm, overall length 128 mm (applicable up to 08/1988 production). Valve materials include 21-4N, 4Cr9Si2, and 40Cr alloy steels with nitriding or chrome plating surface treatment for wear and heat resistance. Direct OEM replacement for Toyota part numbers 13711-58020 (intake) and 13715-58020 (exhaust). Applicable to Toyota Land Cruiser (BJ71, BJ74), Dyna (BU62, BU85), and Coaster models equipped with 13B or 13B-T engines.