Valve - Intake

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake), offering unmatched tensile strength compared to competitive alloys. In fatigue testing at 40,000 psi and 1400°F, Manley exhaust valves endured 100 million cycles, while competitors failed after just 100,000, proving a 1,000× longer fatigue life. Each valve features chrome stems, hard tips, and swirl-polished underheads with fully machined combustion faces for superior airflow, efficiency, and wear resistance. Built for those who demand race-winning strength and precision, Manley Severe Duty® Valves set the industry standard for performance and endurance.

Additional Information

Manley Valve - Intake, Valve-S/D 1.940,+100

Part Type

Engine Intake Valve

• Chrome stems and hard tips enhance durability
• Exotic alloys for superior tensile strength, reliability, and longevity
• Proven fatigue strength for extreme performance
• Swirl polishing and machined faces improved airflow/optimized efficiency

This is a group bundle consisting of:

Image	Qty	SKU	MFR SKU	UPC	Description
	1x	syn8812-03	8812-03	704674066675	Synergy 2018+ Jeep JL / JLU / JT D44 Front Lower Control Arm Skid Plates
	1x	syn8812-02	8812-02	704674411475	Synergy 2018+ Jeep JL / JLU / JT D44 Front Inner C Gussets
	1x	syn8812-01	8812-01	704674399476	Synergy 2018+ Jeep JL/JLU/JT D44 Front Axle Truss

Bundled group items may ship from multiple locations and could have slightly longer transit times if parts are sourced from different warehouses.

Images in this listing may include individual and/or group shots of the products included in the bundle. Please refer to the table to see a breakdown of what is included. Click on a SKU to see individual item details.

For details on the individual components in this bundle, click here.

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Reference Information