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American Aviation Parts datum · avionics

Superior Replacement Parts

ATA · 8421 parts

Superior Replacement Parts brings together the parts, hardware, and consumables your maintenance program calls out for this system. Each listing shows its condition and the certification paperwork available for that part, from new PMA/OEM stock to overhauled and serviceable units, so you can confirm airworthiness before buying and request an FAA 8130-3 or manufacturer Certificate of Conformance where one applies.
LW-12227 Lycoming Support Assembly Starter Ring Gear LW-12227
LW-12227 Lycoming Support Assembly Starter Ring Gear LW-12227
NE
P/N LW-12227 SEM
$3,174.81
Price and availability checked Oct 24, 2026 MST
Backorder
LW-12231 Lycoming Brace-Alt Belt Adj. Bracket LW-12231
LW-12231 Lycoming Brace-Alt Belt Adj. Bracket LW-12231
NE
P/N LW-12231 Lycoming
$189.88
Price and availability checked Oct 24, 2026 MST
Backorder
LW-12237 Lycoming Bracket Assembly Alternator Belt LW-12237
LW-12237 Lycoming Bracket Assembly Alternator Belt LW-12237
NE
P/N LW-12237 SEM
$776.97
Price and availability checked Oct 24, 2026 MST
Backorder
LW-12239 Lycoming Washer - .375 ID LW-12239
LW-12239 Lycoming Washer - .375 ID LW-12239
NE
P/N LW-12239 Lycoming
$51.76
Price and availability checked Nov 2, 2026 MST
Backorder
LW-12267 Lycoming Washer - Thrust Bearing LW-12267
LW-12267 Lycoming Washer - Thrust Bearing LW-12267
NE
P/N LW-12267 Lycoming
$3,961.48
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12281 Lycoming Pipe - Exhaust-Cylinder #4 & 6 LW-12281
LW-12281 Lycoming Pipe - Exhaust-Cylinder #4 & 6 LW-12281
NE
P/N LW-12281 Lycoming
$5,142.94
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12317 Lycoming Bracket - Engine Mtg-Lower LW-12317
LW-12317 Lycoming Bracket - Engine Mtg-Lower LW-12317
NE
P/N LW-12317 Lycoming
$1,228.02
Price and availability checked Oct 24, 2026 MST
Backorder
LW-12413 Lycoming Cylinder Assembly LW-12413
LW-12413 Lycoming Cylinder Assembly LW-12413
NE
P/N LW-12413 SEM
$2,200.93
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12416 Lycoming Cylinder Assembly 16A30080-02
LW-12416 Lycoming Cylinder Assembly 16A30080-02
NE
P/N 16A30080-02 SEM
$2,764.50
Price and availability checked Nov 2, 2026 MST
Backorder
LW-12418 Lycoming Cylinder Assembly LW-12418
LW-12418 Lycoming Cylinder Assembly LW-12418
NE
P/N LW-12418 SEM
$2,267.86
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12425 Lycoming Cylinder Assembly 16A30080-04
LW-12425 Lycoming Cylinder Assembly 16A30080-04
NE
P/N 16A30080-04 SEM
$2,764.50
Price and availability checked Nov 2, 2026 MST
Backorder
LW-12433 Lycoming Cylinder Assembly LW-12433
LW-12433 Lycoming Cylinder Assembly LW-12433
NE
P/N LW-12433 SEM
$2,267.86
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12440 Lycoming Camshaft Assembly LW-12440
LW-12440 Lycoming Camshaft Assembly LW-12440
NE
P/N LW-12440 SEM
$6,724.04
Price and availability checked Oct 24, 2026 MST
In stock
LW-12441 Lycoming Camshaft & Gear LW-12441
LW-12441 Lycoming Camshaft & Gear LW-12441
NE
P/N LW-12441 Lycoming
$10,852.36
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12515 Lycoming Gasket - Oil Cooler By-Pass Vlv LW-12515
LW-12515 Lycoming Gasket - Oil Cooler By-Pass Vlv LW-12515
NE
P/N LW-12515 Lycoming
$30.56
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12517 Lycoming Gasket - Oil Filter Adapter LW-12517
LW-12517 Lycoming Gasket - Oil Filter Adapter LW-12517
NE
P/N LW-12517 Lycoming
$15.56
Price and availability checked Nov 2, 2026 MST
In stock
LW-12538 Lycoming Gear Assembly Hydraul. Pump Driven LW-12538
LW-12538 Lycoming Gear Assembly Hydraul. Pump Driven LW-12538
NE
P/N LW-12538 SEM
$3,583.18
Price and availability checked Oct 24, 2026 MST
Backorder
LW-12636 Lycoming Kit - Seal & Gasket Set LW-12636
LW-12636 Lycoming Kit - Seal & Gasket Set LW-12636
NE
P/N LW-12636 Lycoming
$486.58
Backorder
Price check pending
LW-12690 Lycoming Elbow - 90 Degrees Tube To Male LW-12690
LW-12690 Lycoming Elbow - 90 Degrees Tube To Male LW-12690
NE
P/N LW-12690 Lycoming
$124.89
Price and availability checked Nov 2, 2026 MST
In stock
LW-12714 Lycoming Cylinder Assembly LW-12714
LW-12714 Lycoming Cylinder Assembly LW-12714
NE
P/N LW-12714 SEM
$2,469.62
Price and availability checked Oct 31, 2026 MST
Backorder
LW-12726 Lycoming Pipe - Exhaust LW-12726
LW-12726 Lycoming Pipe - Exhaust LW-12726
NE
P/N LW-12726 Lycoming
$894.34
Price and availability checked Nov 4, 2026 MST
Backorder
LW-12727 Lycoming Pipe - Exhaust LW-12727
LW-12727 Lycoming Pipe - Exhaust LW-12727
NE
P/N LW-12727 Lycoming
$1,296.89
Price and availability checked Nov 4, 2026 MST
Backorder
LW-12729 Lycoming Pipe - Exhaust LW-12729
LW-12729 Lycoming Pipe - Exhaust LW-12729
NE
P/N LW-12729 Lycoming
$1,311.44
Price and availability checked Oct 24, 2026 MST
Backorder
LW-12752 Lycoming Clamp - Gov Oil Tube Support LW-12752
LW-12752 Lycoming Clamp - Gov Oil Tube Support LW-12752
NE
P/N LW-12752 Lycoming
$189.88
Price and availability checked Oct 24, 2026 MST
Backorder