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Technical Data Sheet
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WR43L ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SPARK PLUG is a the manufacturer industrial component. Key specifications include body_style: ELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT, reach_length: 0.500 INCHES NOMINAL IN, usage_design: ENGINE OTHER THAN AIRCRAFT, electrode_style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4), pressure_rating: 230.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS, width_across_flats: 0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2920-00-865-6665, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
WR43L
NSN: 2920-00-865-6665
FSC: 2920
CAGE: 70040 — GENERAL MOTORS LLC DBA GENERAL MOTORS (USA)
SPECIFICATIONS
body_styleELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT
reach_length0.500 INCHES NOMINAL IN
usage_designENGINE OTHER THAN AIRCRAFT
electrode_styleSINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
pressure_rating230.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS
width_across_flats0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN
seat_major_diameter0.785 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN
shield_thread_length0.375 INCHES NOMINAL IN
dc_resistance_rating_in_ohms7500.0 MINIMUM AND 12500.0 MAXIMUM
height_above_mounting_surface2.875 INCHES NOMINAL IN
top_to_shield_thread_distance0.095 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
terminal_sleeve_inside_diameter0.301 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
NSN2920-00-865-6665
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPARK PLUG TITLE COMPONENT PN WR43L MFR SPARK PLUG
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN
•
USAGE DESIGN: ENGINE OTHER THAN AIRCRAFT
•
REACH LENGTH: 0.500 INCHES NOMINAL IN
•
ELECTRODE STYLE: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 5/8-24 UNEF SHIELD
•
TERMINAL SLEEVE INSIDE DIAMETER: 0.301 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
•
HEIGHT ABOVE MOUNTING SURFACE: 2.875 INCHES NOMINAL IN
•
SHIELD THREAD LENGTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN
USAGE DESIGNENGINE OTHER THAN AIRCRAFT
REACH LENGTH0.500 INCHES NOMINAL IN
ELECTRODE STYLESINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
THREAD SIZE AND SERIES/TYPE DESIGNATOR5/8-24 UNEF SHIELD
TERMINAL SLEEVE INSIDE DIAMETER0.301 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
HEIGHT ABOVE MOUNTING SURFACE2.875 INCHES NOMINAL IN
SHIELD THREAD LENGTH0.375 INCHES NOMINAL IN
TOP TO SHIELD THREAD DISTANCE0.095 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
PRESSURE RATING230.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
238-4Interchangeable
interchangeable cross-reference
interchangeable
312-25AB01VJ72Interchangeable
interchangeable cross-reference
interchangeable
312-25AB0202VInterchangeable
interchangeable cross-reference
interchangeable
80017Interchangeable
interchangeable cross-reference
interchangeable
PBC2206F-2Interchangeable
interchangeable cross-reference
interchangeable
100037FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WR43L?
WR43L is a SPARK PLUG.
What parts can replace WR43L?
There are 16 known substitutes for WR43L: 238-4, 312-25AB01VJ72, 312-25AB0202V and 13 more. Substitute compatibility should be verified for your specific system.
Is WR43L still available?
WR43L is currently cancelled.
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Last verified: July 2026