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Manley · 12355-8

Part #: 12355-8
UPC: 807298105932

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Description: Manley Valve - Exhaust, Valve-L-92 S/D 1.600; Head Diameter: 1.600 in. - Stem Diameter: 0.3136 in. - O/A : 5.215 in.

Description:

Description

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.

Features & benefits

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

Information

Manley Valve - Exhaust, Valve-L-92 S/D 1.600.

Specifications

GTIN
00807298105932
Weight
3 lb
Height
2.5 in
Length
11.75 in
Width
6.75 in
EO
Offroad
Life cycle
Available to Order
Warehouse brand code
BBPB
AAIA brand code
BBPB

Attributes

California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category Hierarchy
Valves>Stainless Steel>Severe Duty
Cylinder Head
L92 Cylinder Head
Engine
L99
Engine - Web
L99
Engine Detail - Web
L99
Engine Family
L99
Engine Type
ICE
Engine Valve Quantity
8
Head Diameter
1.600
Industry
Automotive
Make
Chevrolet
Make - Web
Chevrolet
Margin Width
0.065
O/A Length
5.215
Out of Stock Message
Call for Availability
Product Market
Domestic
Product Type
Engine Exhaust Valve Kit
Seat Width
0.115
Stem Diameter
0.3136
Tip Length
0.160
Title
Manley Valve - Exhaust, Valve-L-92 S/D 1.600
Title - Web
Manley Severe Duty? Series Chevrolet L-99 Exhaust Valve Kit - 1.600 in. Head Dia., 5.215 in. O/A Length, 0.3136 in. Stem
Top of Head
18 Degree Dish
Type
Exhaust
Underhead Angle
25.00
Underhead Radius
7/16
Valve Head Diameter
1.600
Valve Head Shape
18 Degree Dish
Valve Length
5.215
Valve Material
Stainless Steel
Valve Quantity
8
Valve Series
Severe Duty? Series
Valve Stem Diameter
0.3136
Valve Tip Length
0.160
Valve Type
Exhaust

Fitment status

This product is universal and will fit your application.