Manley Performance Severe Duty 1.56in. Exhaust Valves | 2014+ L83 5.3L Small Block Chevy (12361-8)

Severe Duty 1.56in. Exhaust Valves for 2014+ L83 5.3L Small Block Chevy Engines by Manley Performance

Manley's Severe Duty Exhaust Valves are constructed from XH-428 Stainless Steel for unparalleled durability. Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance. The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.

Measurements

• Head Diameter: 1.56in.
• Stem Diameter: 0.3136in.
• Installed Height: Stock
• O/A Length: 5.208in.
• Tip Length: 0.16in.
• Underhead Angle / Radius: 25°x7/16"
• Margin: 0.065
• Seat Width: 0.11
• Top of Head: 18°
• Weight: 93g

Applications

• 2014-2019 Chevrolet Silverado 1500 LTZ
• 2014-2019 Chevrolet Silverado 1500 Z71 LTZ
• 2015 & 2017 Chevrolet Silverado 1500 High Country
• 2014-2019 Chevrolet Tahoe 1500 LS
• 2014-2019 Chevrolet Tahoe 1500 LT
• 2014-2016 Chevrolet Tahoe 1500 LTZ
• 2017-2019 Chevrolet Tahoe 1500 Premier
• 2014-2019 Chevrolet Suburban 1500 LS
• 2014-2019 Chevrolet Suburban 1500 LT
• 2014-2016 Chevrolet Suburban 1500 LTZ
• 2017-2019 Chevrolet Suburban 1500 Premier
• 2014-2019 GMC Sierra 1500 SLT
• 2014-2019 GMC Sierra 1500 Denali
• 2016-2019 GMC Sierra 1500 AT4
• 2015-2019 GMC Yukon 1500 SLE
• 2015-2019 GMC Yukon 1500 SLT
• 2015-2019 GMC Yukon XL 1500 SLE
• 2015-2019 GMC Yukon XL 1500 SLT

What's In The Box?

• 8 - Valves

Warranty

• Limited Manufacturers Warranty