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Cylinder Head Assembly 3646324 3646326 3646323 for Cummins Engine K19 K38 K50 Series

Product Name  Cylinder Head assy
Part Number 3646324 3646326 3646323

3640320 3639984 3081065
Material Cast Iron
Origin China
Engine Type K19 K38 K50  Engine
Production Capacity 1000-2000 Pieces Per Month
Packing Original Packing/Neutral packaging/Customer packaging
Application Engineering Machinery, Heavy Truck,diesel engine
After-Service Strict test before shipment/fast delivery

 

Honesty comany are located in Chongqing City, China, specialized in complete engines  and spare parts . Mainly sell Cummins engines and Cummins original parts, Dongfeng Cummins (DCEC), Xi’an Cummins (XCEC), Chongqing Cummins (CCEC) engines, Foton Cummins, mechanical engines 4BT3.9, 6BT5.9, 6CT8.3, L8.9, L10, M11, N14, NT855, K19, K38, K50, F3.8, F2.8 series, Cummins electronic control engine ISF, ISBe, ISDe, ISCe, ISLe, ISM11, ISX15 series and engineering machinery engine QSB 3.3 QSB5.9 , QSB6.7, QSC8.3, QSL9, QSM11, QSX15, QSK19 QSK38 QSK50 QSK23 QSK60 QSK45 series engines and all spare parts, almost all Cummins products, we can provide. Caterpillar Engines C27, C7, C9, C13, C15, C4.4, 3516, 3508, C32, C18, C0.5, 3616, 3516, C11, 3508… series engines and all spare parts. we can provide other spare parts and engines.sach as MAN and Scania,Deutz , perkins,Volvo Penta, ISUZU …etc

 

Core processing characteristics of cylinder head

(1) Valve system processing

Valve seat and guide: High precision boring/reaming to ensure tightness (valve seat Angle is usually 45°).

Valve size: Turbocharged models (e.g. 4BT3.9) may have larger diameter intake valves to improve intake efficiency.

Processing technology: multi-axis CNC machine tool processing, with special tools (such as CBN blade) to ensure surface roughness (Ra ≤ 1.6μm).

(2) Combustion chamber and airway

Combustion chamber shape: Vortex chamber design (B3.9 may be direct injection), requiring CNC milling to ensure volume consistency.

Intake and exhaust channels: The intake ports of turbocharged models (4BT3.9) need to be optimized for airflow dynamics and may be asymmetrical.

 

(3) Cooling and lubrication channels

Cooling water channel: deep hole drilling processing, aperture accuracy of ±0.1mm, to prevent leakage.

Oil passage processing: cross holes need to be deburred to avoid metal debris residue resulting in lubrication failure.

(4) Mounting surface and hole position

Cylinder head bonding surface: Flatness requirements ≤0.05mm, requiring precision grinding or milling.

Bolt hole: position tolerance ±0.05mm, thread processing using extrusion tapping (aluminum alloy cylinder head) or cutting tapping (cast iron)

  • Cylinder Head Assembly 3646324 3646326 3646323 for Engine K19 K38 K50 , with main list of Cummins cylinder heads, in below: 
Engine Description Part # Part # Part # Part # Part #
B3.9 cylinder head 3967460 3920394 3966448 3933370 3920005
B3.9 cylinder head 3304570 3902521 3920485 3929736 3927278
B3.9 cylinder head 3800338 3967444 3967451 3933424 3930913
B3.9 cylinder head 3933494 3933419 3919357 3966450 3933418
B3.9 cylinder head 3933417 3933421 3966449 3967432
B5.9 cylinder head 3802805 3904573 3905470 3910276 3911273
B5.9 cylinder head 3917435 3919271 3919272 3920395 3925389
B5.9 cylinder head 3925392 3927282 3927301 3930421 3930587
B5.9 cylinder head 3930652 3930921 3930932 3930933 3934746
B5.9 cylinder head 3934758 3934763 3934768 3934769 3934783
B5.9 cylinder head 3938656 3966454 3967455 3967456 3967458
B5.9 cylinder head 3917055 3917287 3920008 3922691 3925400
B5.9 cylinder head 3927299 3934747 3966452 3967431 3991773
B5.9 cylinder head 3927300 3967454 3967449 4941412 3968652
B5.9 cylinder head 3930420 3934160 3934795 3966453 3934753
B5.9 cylinder head 3930424
B5.9CNG cylinder head 4946426 3922739 3922730 3280055 3925391
C8.3 cylinder head 3936152 3936153 3936180 3973493 4938632
C8.3 cylinder head 3802468 3913111 3802466 3948583 3913493
ISC cylinder head 3948583
L8.9 cylinder head 3945021 4929518 4935784 5259423 4987975
QSL cylinder head 4942123NX 4942138 4929288 4931398 3936256
QSL cylinder head 4936714 5282706 4929519 5348475 4929518
QSL cylinder head 4989710 4942139 4935787 5347974 4935786
QSL cylinder head 4987984 5282720 4942137 4987983 5320745
QSL cylinder head 4935785 5300890 5314801 5529506
QSL cylinder head 3969725 4991701 4942119 5348480 5259426
ISL cylinder head 5255758 5348480RX 5259426NX 4942118 4942118NX
ISL cylinder head 3969374 3969374NX 4939110 5348478 4936724
ISL cylinder head 4936724NX 5259421 5259421NX 4942117 3969728
ISL cylinder head 4987960 5282716 4942116 4987959 5320739
ISL cylinder head 4987973 4942121 5320741 3973631 4942122
ISL cylinder head 4987974 5282717 3973630 3973632 4928931
ISL cylinder head 4942123 4942123NX 4987975 5259423 5259423NX
ISL cylinder head 5348479 5348479RX 3969734 5404060 4942507
ISL cylinder head 4940243 4987963 5347972 5404063 5447765
ISL cylinder head 5339587 5404059
ISB4.5 cylinder head 4941496 3973655 4934249 3976095 3975144
ISB4.5 cylinder head 3973654 4934248 3975143 3972624 3976093
ISB4.5 cylinder head 3976094
ISB6.7 cylinder head 2831274 3973225 4936081 3977221 3943627
ISB6.7 cylinder head 4983299 3977225 5272383 4941090 4983301
ISB6.7 cylinder head 5361604 4317163 3977226 5364892 3971793
ISB6.7 cylinder head 5397436 5361593
ISF2.8 cylinder head 5271179 5271177 5271176 5271178 5265705
ISF3.8 cylinder head 5264128 5258274 4995524 5258275 5271866
ISF3.8 cylinder head 5271867 5271868 5258276 4995525 5271869
QSM cylinder head 4962454 4083406 2864028 2864033 2864016
K cylinder head 3081072 3640318 3068402 3811988 3811985
K cylinder head 3640321 3641560RX 3811987 3640323 3021692
K cylinder head 3811989 3068171 3074623 3074623RX 3081072
K cylinder head 3081072RX 3640323NX 3640323RX 3646326NX 3646326RX
K cylinder head 3646323 3646323NX 3646323RX 3081064 3635021
K cylinder head 3176619 3009088 3811986 3074622 3074622RX
K cylinder head 3627753 3081071 3081071RX 3640322 3640322NX
K cylinder head 3646325 3646325NX 3646325RX 3068401 3072438
K cylinder head 3072438RX 3081070 3081070RX 3640321NX 3646324
K cylinder head 3646324NX 3646324RX 3081073 3811981 3009089
K cylinder head 3021692RX 3009138 3018868 3081073RX 3811988NX
K cylinder head 3811988RX 3007572 205015 3007207 3009081
K cylinder head 3634258 3081065
N855 cylinder head 3007716 3007717 3418678 3411805 4915267
N855 cylinder head 3055098 3041993 4915442 3418684 3046760
N855 cylinder head 3411814 3050419 3060445 3053346 BM60971
N855 cylinder head 3411809 3050419RX 3652807 3406730 3050418
N855 cylinder head 3081224 3081224RX 3406734 AR10327 3008100
N855 cylinder head 3675505 3008101 3008102RX 3041994 3652600
N855 cylinder head 3675506 3008094 AR45196 3050418 3041992
N855 cylinder head 3024375 3008089 3418529 135541 3801224
N855 cylinder head 3041991 3409923 3411798 3053344 4915441
N855 cylinder head 3652808 3081225 3406736 3411811
ISB5.9 cylinder head 4931564
QSX cylinder head 4962732 3682863 3683002 3683986 4331387
QSX cylinder head 5413782 3683003 4101421 3683987 4925775
QSX cylinder head 4962731 4393478 5413784 3104287 3104450
ISX cylinder head 4386011 3104290 3104291 3104451 4393480
What products do you supply?

we have three main part of our products:

  1.  Natural gas engine, diesel engine
  2.  Cylinder head, cylnder block, crankshaft and other related engine parts.
  3.  Hydraulic Piston motor and Pump.

 

What brand do you mainly focus on?

we mainly foucs on Cummins engine and engine parts, also we produce some model for Caterpillar, Komatsu, Mercedes Benz, Isuzu, Mitsubishi, Hino and Yanmar contact us for our latest catalog.

Could you accept sample order?

yes, we could accept sample order, we have confidence on our products quality

Could you accept customization?

Accept OEM and ODM.  We have OEM and ODM experience for Cummins, Mercedes Benz, Mitsubishi, Chryler, Iveco, Citroen, Geely and so on.

We offer power solution with engine assy for many construction machinery factories, generator sets factories, ships factories, and other companies.

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