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National Stock Number (NSN) 2990-01-227-7170 (2990012277170) Parts List

Item Name Ring Set Piston
Federal Supply Group (FSG) Engine Accessories
Federal Supply Class (FSC) 2990 Miscellaneous Engine Accessories Nonaircraft
National Item Identification Number (NIIN) 01-227-7170 (012277170)
NCB Code USA (01)
Manufacturer Spx Corporation, Bosch Automotive Service Solutions
Part Number Manufacturer Item Name Cage Code RFQ
W9123KX20 spx corporation ring set piston 53781 RFQ
W9123KX20 bosch automotive service solutions ring set piston 45225 RFQ

Technical Characteristics of NSN 2990012277170

MRCCriteriaCharacteristic
ACXZSTANDARD BORE DIAMETER4.000 INCHES
AETDPISTON ACCOMMODATION QUANTITY24
AETERING SET COMPONENT PARTSCOMPRESSION RING,16,OIL RING,8
FEATSPECIAL FEATURESSEALED 289 AND 351 ENGINES

Relevant Components for NSN - 2990-01-227-7170, 2990012277170
2915-00-116-5978 (2915001165978) 2930-01-124-8263 (2930011248263) 2990-00-321-8769 (2990003218769) 2930-00-441-7617 (2930004417617)
2920-00-856-5268 (2920008565268) 2915-00-095-0706 (2915000950706) 2990-01-007-9945 (2990010079945) 2930-12-315-1618 (2930123151618)
2990-01-322-9881 (2990013229881) 2940-00-705-5956 (2940007055956) 2920-01-642-0622 (2920016420622) 2930-00-440-6409 (2930004406409)

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