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PartsTable / COMPONENT / 123078
123078 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The COVER,INTAKE MANIFOLD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, thread_class: 2B, hole_diameter: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 5.500 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-178-8620, 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
123078
NSN: 5330-00-178-8620
FSC: 5330
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
thread_class2B
hole_diameter0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width5.500 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_length5.500 INCHES NOMINAL IN
hardness_rating95.0 BRINELL STANDARD MINIMUM
thread_directionRIGHT-HAND
aperture_diameter4.250 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5330-00-178-8620
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 123078 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL THICKNESS: 0.013 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
•
OUTSIDE CORNER RADIUS: 0.500 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 6.260 INCHES MINIMUM AND 6.300 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.420 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
APERTURE DIAMETER: 5.810 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH7.262 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.013 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
OUTSIDE CORNER RADIUS0.500 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER6.260 INCHES MINIMUM AND 6.300 INCHES MAXIMUM IN
HOLE DIAMETER0.420 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
APERTURE DIAMETER5.810 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
9123078Interchangeable
interchangeable cross-reference
interchangeable
123078Interchangeable
interchangeable cross-reference
interchangeable
9105495Interchangeable
interchangeable cross-reference
interchangeable
10082594Interchangeable
interchangeable cross-reference
interchangeable
25088493Interchangeable
interchangeable cross-reference
interchangeable
A20486Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 123078?
123078 is a COVER,INTAKE MANIFOLD.
What parts can replace 123078?
There are 7 known substitutes for 123078: 9123078, 123078, 9105495 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 123078?
123078 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-178-8620. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026