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MR43T ✓ 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: UNSHIELDED,SOLID OR THREADED POST,TAPERED SEAT, reach_length: 0.440 INCHES NOMINAL IN, usage_design: ENGINE OTHER THAN AIRCRAFT, electrode_style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4), width_across_flats: 0.625 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2920-01-128-2287, 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
MR43T
NSN: 2920-01-128-2287
FSC: 2920
CAGE: 70040 — GENERAL MOTORS LLC DBA GENERAL MOTORS (USA)
SPECIFICATIONS
body_styleUNSHIELDED,SOLID OR THREADED POST,TAPERED SEAT
reach_length0.440 INCHES NOMINAL IN
usage_designENGINE OTHER THAN AIRCRAFT
electrode_styleSINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
width_across_flats0.625 INCHES NOMINAL IN
NSN2920-01-128-2287
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPARK PLUG TITLE COMPONENT PN MR43T MFR SPARK PLUG
KEY FEATURES
•
REACH LENGTH: 0.440 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
BODY STYLE: UNSHIELDED,SOLID OR THREADED POST,TAPERED SEAT
•
USAGE DESIGN: ENGINE OTHER THAN AIRCRAFT
•
ELECTRODE STYLE: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
TECHNICAL CHARACTERISTICS (FLIS)
REACH LENGTH0.440 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
BODY STYLEUNSHIELDED,SOLID OR THREADED POST,TAPERED SEAT
USAGE DESIGNENGINE OTHER THAN AIRCRAFT
ELECTRODE STYLESINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
XJ8-64Interchangeable
interchangeable cross-reference
interchangeable
14R4Interchangeable
interchangeable cross-reference
interchangeable
R45Interchangeable
interchangeable cross-reference
interchangeable
ARF8-6Interchangeable
interchangeable cross-reference
interchangeable
W-S-506Interchangeable
interchangeable cross-reference
interchangeable
AWSF42Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MR43T?
MR43T is a SPARK PLUG.
What parts can replace MR43T?
There are 20 known substitutes for MR43T: XJ8-64, 14R4, R45 and 17 more. Substitute compatibility should be verified for your specific system.
Is MR43T still available?
MR43T is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026