ACW

Decided to collect all the numbers scattered through multiple threads here. Please post additional part numbers, corrections, and requests in https://ls1tech.com/forums/generation-iv-internal-engine/201190-info-part-s-ls2.html


LS2 Part Numbers


LS2 bare block = 12568950
LS2 crate motor = 19156261 (formerly 12499750)
LS2 longblock assembly = 89017654

LS2 camshaft = 12574519
LS2 timing chain = 12586482
LSx lifter = 17122490
LS2 front cover = 12600325
LS2 rear cover (same as LS1/LS6) = 12572014
LS2 90mm throttle body with actuator (same as LS7) = 12570790
LS2 throttle body attachment fastener x4 = 11519971
LS2 throttle body attachment seal = 12576549
LS2 MAP sensor = 16212460
LS2 intake manifold = 89017648 or 12589181
LS2 intake to cylinder head gasket x8 = 12580833
LS2 intake manifold attachment bolt x10 = 12552344
LS2 intake manifold sight shield, LH = 12568998
LS2 intake manifold sight shield, RH = 12569246
LS2/LS7 valley cover = 12570471
LS2 fuel injector assembly x8 = 12569113
LS2 fuel injector o-rings (orange) = 89017587
LS2 fuel injector retainer clip x8 = 24503227
LS2 fuel rail = 12572174
LS2 fuel rail attachment bolt x4 = 12590276
LS2 front coolant tube = 12578838
LS2 rear coolant plugs x2 = 12563325
LS2 polished rear wheel = 9594349
LS2 valve springs (same as LS6) = 12586484
LS2 valve pushrod cover guide (lifter tray) = 12595365
LS2 cylinder heads (same as LS6) = 12564825
LS2 cylinder intake valve (same as LS1) = 12563063
LS2 water pump = 89017457
2005 Corvette C6 LS2 exhaust manifold, LH = 12569388
2005 Corvette C6 LS2 exhaust manifold, RH = 12576061
2004-05 GTO LS1/LS2 exhaust manifold, LH = 12563277
2004-05 GTO LS1/LS2 exhaust manifold, RH = 12563278
2003-05 SSR LH6/LS2 exhaust manifold, LH = 12567483
2003-05 SSR LH6/LS2 exhaust manifold, RH = 12567484
C6 LS2 oil pan (has shallow rear sump) (kit with bolts/gasket) = 12581810
C6 LS2 oil pick-up screen (same used on LS6) = 12558750
C6 LS2 oil deflector (same as used on LS6/LS1) = 12558189
C6 LS2 dipstick = 12570788
C6 LS2 dipstick tube = 12570787
SSR/Trailblazer 5.3L/LS2 oil pan (has front sump with hole for 4wd front axle) = 12579723
GTO LS1/LS2 oil pan (has front sump) = 12581209
2005 GTO LS2 PCM = 92180030
2005 GTO LS2 ECM = 12597883
LS2/LS7 spark plug wires = 89018058
LS2 flywheel = 12571611



Sources:
https://ls1tech.com/forums/showthread.php?t=201190
https://ls1tech.com/forums/generation-iv-internal-engine/203761-ls2-block-part-number.html
https://ls1tech.com/forums/generation-iv-internal-engine/216495-ls2-tb-s-sdpc.html
https://ls1tech.com/forums/generation-iv-internal-engine/244928-ls1-ls2-intake-swap-f-body-part-numbers.html
https://ls1tech.com/forums/generation-iv-internal-engine/282545-ls2-new-carte-motor.html
https://ls1tech.com/forums/generation-iv-internal-engine/207273-gmpartsdirect-com-selling-ls2-parts-soon.html
https://ls1tech.com/forums/generation-iv-internal-engine/254079-ls2-exhaust-manafolds.html
https://ls1tech.com/forums/generation-iv-internal-engine/240175-part-ls2-block.html
https://ls1tech.com/forums/generation-iv-internal-engine/181358-anyone-interested-ls2-part-s.html
https://ls1tech.com/forums/generation-iv-internal-engine/278079-ls2-part-numbers-needed.html
https://ls1tech.com/forums/generation-iv-internal-engine/431621-ls7-plug-wires.html
https://ls1tech.com/forums/generation-iv-internal-engine/347535-ls2-pcm-part.html
https://ls1tech.com/forums/generation-iv-internal-engine/506004-part-ls2-fron-rear-covers.html
https://ls1tech.com/forums/generation-iv-internal-engine/476902-anyone-know-part-number-ls2-valley-cover.html

ACW

LS7 Part Numbers


LS7 bare block = 12571246 or 17802854
LS7 crate motor = 17802397
LS7 500hp smallblock = 12578105

LS7 camshaft = 12571251
LS7 cylinder head (bare, without valves) = 12578450
LS7 titanium connecting rod = 12586258
LS7 intake valve = 12591644
LS7 exhuast valve = 12578455
LS7 intake rocker arm = 12579615
LS7 exhaust rocker arm = 12579617
LS7 rocker bolt (m8x1.25x34) = 11588791
LS7 pushrod = 12593344
LSx lifter = 17122490
LS7 valve spring = 12578457
LS7 intake valve lash cap = 12596509
LS2/LS7 valley cover = 12570471
LS7 fuel rail = 12569124
LS7 fuel injector = 12576341
LS7 intake manifold = 12569011
LS7 90mm throttle body (same as LS2) = 12570790
LS7 front cover = 12593546
LS7 crankshaft = 12568820
LS7 clutch and pressure plate kit = 24233650
LS7 engine oil tank = 12603281
LS7 oil pan = 12596689
LS7 oil pump = 12598212
LS7 auxiliary engine oil tank hose = 15210117
LS7 auxiliary engine oil tank hose = 15210122
LS7 dry sump tank = 12603281
LS7 outlet and inlet cooling line = 15210122
LS7 outlet oil line = 15210117
LS7 engine cover ('sight shield'), LH = 12574619
LS7 engine cover ('sight shield'), RH = 12574620
LS2/LS7 spark plug wires = 89018058



Sources:
https://ls1tech.com/forums/generation-iv-internal-engine/294013-ls7-gm-crate-motor-part-17802397-a.html
https://ls1tech.com/forums/generation-iv-internal-engine/243257-gm-parts-depot-says-ls7.html
https://ls1tech.com/forums/generation-iv-internal-engine/360249-ls7-part-numbers-some-prices-here.html
https://ls1tech.com/forums/generation-iv-internal-engine/399809-ls7-part-numbers-post-requests-ones-you-have.html
https://ls1tech.com/forums/showthread.php?t=431621
https://ls1tech.com/forums/generation-iv-internal-engine/424127-ls7-bare-block-part-number.html
https://ls1tech.com/forums/generation-iv-internal-engine/505717-ls7-front-cover-part-number.html