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Manley Extreme Duty Series Stainless Steel Valves 12363-1 Valves, VALVE-L83 5.3L E/D 1.560

SKU: MAN12363-1

Valves

Manley Extreme Duty Series Stainless Steel Valves 12363-1 Valves, VALVE-L83 5.3L E/D 1.560

SKU: MAN12363-1

Valves
A$161.01
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment. All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

Part Type

Valves

Data: v4.2 - Upd: 2026-10-14 10:10:20

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
12363-1
Product Attributes - Part Type
Valves
Product Attributes - Product Line
Manley Extreme Duty Series Stainless Steel Valves
Product Attributes - UPC
807298109985
Product Attributes - Valve Position
Exhaust
Product Attributes - Exhaust Valve Head Diameter (in.)
1.560 in.
Product Attributes - Exhaust Valve Head Diameter (mm)
39.624mm
Product Attributes - Exhaust Valve Stem Diameter (in.)
0.314 in.
Product Attributes - Exhaust Valve Stem Diameter (mm)
7.97mm
Product Attributes - Exhaust Overall Valve Length (in.)
5.208 in.
Product Attributes - Exhaust Overall Valve Length (mm)
132.283mm
Product Attributes - Undercut Stem
No
Product Attributes - Swirl-Polished
Yes
Product Attributes - Valve Tip Length (in.)
0.160 in.
Product Attributes - Valve Tip Length (mm)
4.064mm
Product Attributes - Valve Material
XH-432 Xtreme alloy
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Groove Style
Conventional
Product Attributes - Approximate Weight (g)
98
Product Attributes - Valve Head Style
18 degree dish
Product Attributes - Valve Seat Width (in.)
0.110 in.
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Fits L83 Small Block Chevy 2014-up.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man12363-1
SFX Item ID 4929002
Supplier Item Code 4929002
Manufacturer SKU 12363-1
Manufacturer UPC 807298109985
Alternative References VALVE-L83, 5.3L

Compatibility

Application Data
  • Valve FitmentSearch by engine
    MakeCHEVROLET
    Beginning Year2014
    Ending Year2020
    Engine TypeV8
    Engine Size5.3L/325
    Engine FamilyChevy small block Gen V
    Valve Installed LengthStock
    Cylinder Head TypeL83
    Application NotesFits L83 Small Block Chevy 2014-up.

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