Cummins / Cummins Parts / Cylinder Head, Engine Block, Camshaft, Crankshaft / Genuine Cummins Machinery Engine Parts QSL9 ISL9 ISLE
Genuine Cummins Machinery Engine Parts QSL9 ISL9 ISLE Genuine Cummins Machinery Engine Parts QSL9 ISL9 ISLE
Genuine Cummins Machinery Engine Parts QSL9 ISL9 ISLE Genuine Cummins Machinery Engine Parts QSL9 ISL9 ISLE

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Genuine Cummins Machinery Engine Parts QSL9 ISL9 ISLE

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Cummins QSL9 ISL9 Engine Parts

  • QSL9 ISL9 Base Engine Parts

  • Cummins

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This table shows Cummins QSL9 ISL9 engine parts number and quantity

QSL9  Base Engine Part Number Product Name Quantity Dimensions

Cummins QSL9 Cylinder Block Ref

Cylinder Block

1 3008468 Pipe Plug 1

3089023 Threaded Plug 1
2 3089019 O Ring Seal 1
3 superseded part 3089021 Threaded Plug 1
4 3629497 Draincock 1
5 3900257 Pin Dowel 2
6 3901846 Pin Dowel 4
7 3901969 Expansion Plug 1
8 3907177 Rectangular Ring Seal 6
9 3909025 Hexagon Flange Head Cap Screw 6 M8 X 1.25 X 55
10 superseded part 3926048 O Ring Seal 1
11 3936352 Studded Flange Cap Screw 1
12 3944153 Main Bearing 7
13 3944158 Main Bearing 6
14 3945859 Crankshaft Thrust Bearing 1
15 superseded part 3948095 Cylinder Liner 6

3965012 Engine Crankshaft 1
16 3904483 Pin Dowel 1
17 3918776 Crankshaft Gear 1

3965011 Engine Crankshaft 1
18 3950161 Hexagon Flange Head Cap Screw 4 M6 X 1 X 12
19 3965010 Engine Crankshaft 1
20 3972345 Speed Indicator Ring 1
21 5317051 Pin Dowel 1

3965966 Valve Tappet 12
22 3964719 Cam Follower Socket 1
23 3965967 Cam Follower Roller 1
24 3965968 Valve Tappet 1
25 3965969 Cam Follower Roller Pin 1
26 3966286 Studded Hexagon Cap Screw 1
27 3977851 Threaded Plug 6
28 3977853 Threaded Plug 1
superseded part 5271268 Cylinder Block 1
29 143066 Expansion Plug 3
30 3004258 Expansion Plug 4
31 3900956 Expansion Plug 3
32 3905401 Expansion Plug 3
33 3970810 Fracture Resistant Screw 14 M14 X 2 X 135
34 superseded part 4944725 Tappet Guide 12
35 superseded part 5271267 Cylinder Block 1
36 5283368 Bushing 7
37 5309323 Main Bearing Cap 7
38 5273887 Socket Set Screw 1 M10 X 1.5 X 16
39 5405325 Piston Cooling Nozzle 6

kit number



3945930 Main Bearing - Standard


3945934 Main Bearing - 1.00 Mm Oversize


3945932 Main (020) Bearing - 0.50 Mm Oversize


3800328 Liner Kit - Standard


4955483 Block Kit - Standard


3945933 Bearing,Main (030) - 0.75 Mm Oversize


3945931 Bearing,Main (010) - 0.25 Mm Oversize

QSL9 Cylinder Block Coolant Plumbing Ref

Cylinder Block Coolant Plumbing

1 3008469 Pipe Plug 2

QSL9 Cylinder Head Ref

Cylinder Head

1 3960043 Fracture Resistant Screw 26 M14 X 2 X 160
2 3977851 Threaded Plug 1
3 superseded part 4981796 Cylinder Head Gasket 1
superseded part 5404060 Cylinder Head 1
4 3900250 Valve Collet 48
5 3944452 Valve Spring Retainer 12
6 superseded part 3948578 Valve Stem Seal 24
7 3979599 Valve Rotator 12
8 4981794 Intake Valve 12
9 4981795 Exhaust Valve 12
10 5316172 Valve Spring 12
11 5316173 Valve Spring 12

5404059 Cylinder Head 1
12 3032693 Expansion Plug 2
13 3940152 Valve Insert 12
14 3945093 Expansion Plug 1
15 3945094 Expansion Plug 2
16 3945095 Expansion Plug 6
17 3945097 Expansion Plug 1
18 4934063 Valve Stem Guide 24
19 5263672 Expansion Plug 18
20 5320741 Cylinder Head 1
21 5367376 Valve Insert 12

Number kit



5259420 Intake Valve Kit - Standard


5259419 Exhaust Valve Kit - Standard

QSL9 Performance Parts Ref

Performance Parts

1 3900227 Hexagon Head Cap Screw 2 M8 X 1.25 X 22
2 3920692 Retaining Ring 12
3 3944001 Camshaft Thrust Support 1
4 superseded part 3948412 Compression Piston Ring 6
5 3950549 Piston Pin 6
6 3950661 Connecting Rod Bearing 6
7 3959045 Injector Clamp 6
8 3966244 Connecting Rod Bearing 6

3966430 Camshaft 1
9 2892779 Pin Dowel 1
10 3966431 Camshaft 1
11 4017567 Hexagon Flange Head Cap Screw 12 M6 X 1 X 40
12 5263308 Injector 6
13 3976371 Injector Seal 1
14 3977393 O Ring Seal 1
15 5267662 Compression Piston Ring 6
16 5284141 Camshaft Gear 1
superseded part 5289332 Engine Connecting Rod 6
17 3944679 Connecting Rod Cap Screw 2 M12 X 1.25 X 63
18 4944137 Bushing 1
19 5271841 Engine Connecting Rod 1
20 5296700 Oil Piston Ring 6

5343654 Engine Piston 6
21 3966721 Piston Skirt 1
22 4941393 Piston Top 1

Number kit


4089805 Rod Bearing (020) - 0.50 Mm Oversize Set


4089807 Rod Bearing (040) - 1.00 Mm Oversize Set


4089806 Rod Bearing (030) - 0.75 Mm Oversize Set


4089804 Rod Bearing (010) - 0.25 Mm Oversize Set


4089963 Piston - Standard


4352140 Rod Bearing (Non Std) - 0.25 Mm Oversize Set


4352141 Rod Bearing (Non Std) - 0.50 Mm Oversize Set


5579381 Connecting Rod Bearing Kit - Standard

QSL9 Rocker Lever Ref

Rocker Lever

1 3901447 Hexagon Flange Head Cap Screw 7 M8 X 1.25 X 75
2 3943445 Valve Crosshead 6
3 3945236 Valve Crosshead 6
4 3964715 Push Rod 12

3969883 Rocker Lever Housing 1

3073972 Electrical Connector 2
5 3046201 O Ring Seal 1
6 3073971 Electrical Connector 1
7 3969834 Rocker Lever Housing 1

4995628 Rocker Lever Assembly 1

4995629 Rocker Lever 2
8 3941140 Rocker Lever Support 1
9 3945231 Hexagon Flange Head Cap Screw 1 M10 X 1.5 X 67.5

3945232 Hexagon Flange Head Cap Screw 1
10 3945247 Hexagon Flange Head Cap Screw 1 M10 X 1.5 X 67.5
11 3945326 O Ring Seal 1
12 3966658 Rocker Lever Shaft 2
superseded part 4995633 Rocker Lever 1
13 203131 Heavy Hexagon Nut 1 3/8 - 24 UNF
14 3941934 Rocker Lever 1
15 3964720 Rocker Lever Adjusting Screw 1 3/8 - 24 X 1 1/4 INCH
16 4994197 Rocker Lever Ball 1
17 4994198 Rocker Lever Socket 1

4995634 Rocker Lever 1
18 3941937 Rocker Lever 1
19 3945228 Valve Adjusting Nut 1
20 3964720 Rocker Lever Adjusting Screw 1 3/8 - 24 X 1 1/4 INCH
21 4994197 Rocker Lever Ball 1
22 4994198 Rocker Lever Socket 1

4995632 Rocker Lever 4
23 3941140 Rocker Lever Support 1
24 3943933 Hexagon Flange Head Cap Screw 1 M10 X 1.5 X 68
25 3945231 Hexagon Flange Head Cap Screw 1 M10 X 1.5 X 67.5
26 3966658 Rocker Lever Shaft 2
superseded part 4995633 Rocker Lever 1
27 203131 Heavy Hexagon Nut 1 3/8 - 24 UNF
28 3941934 Rocker Lever 1
29 3964720 Rocker Lever Adjusting Screw 1 3/8 - 24 X 1 1/4 INCH
30 4994197 Rocker Lever Ball 1
31 4994198 Rocker Lever Socket 1

4995634 Rocker Lever 1
32 3941937 Rocker Lever 1
33 3945228 Valve Adjusting Nut 1
34 3964720 Rocker Lever Adjusting Screw 1 3/8 - 24 X 1 1/4 INCH
35 4994197 Rocker Lever Ball 1
36 4994198 Rocker Lever Socket 1
37 5272959 Rocker Lever Housing Gasket 1

QSL9 Front Gear Housing Ref

Front Gear Housing

1 3926846 Hexagon Flange Head Cap Screw 3 M8 X 1.25 X 20
2 3943885 Hexagon Flange Head Cap Screw 3 M8 X 1.25 X 40
3 3944293 Gear Housing Gasket 1
4 4991695 Gear Housing 1

QSL9 Valve Cover Ref

Valve Cover

1 3900632 Hexagon Flange Head Cap Screw 8 M8 X 1.25 X 35
2 3959799 Vibration Isolator 8

3967777 Valve Cover 1
3 3959798 Valve Cover Gasket 1
4 3967464 Valve Cover 1

3973511 Filler Cap 1
5 3968283 Filler Cap 1
6 3973512 O Ring Seal 1

QSL9 Front Gear Cover Ref

Front Gear Cover

1 3900631 Hexagon Flange Head Cap Screw 12 M8 X 1.25 X 25
2 3918113 Debris Shield 1

3942535 Oil Seal 1
3 3921927 Oil Seal 1
4 3941786 Seal Carrier 1
5 3958112 Gear Cover 1
6 3967746 Hexagon Flange Head Cap Screw 11 M8 X 1.25 X 50
7 4946714 Lock Nut 5

Kit Number



4024883 Seal Kit - Standard


4025270 Seal Kit - Standard

QSL9 Coolant Heater Starting Aid Plumbing Ref

Coolant Heater Starting Aid Plumbing

1 3008469 Pipe Plug 1

QSL9 Front Drive Adapter ref
1 3901859 Hexagon Flange Head Cap Screw 4 M12 X 1.75 X 55
1 3939088 Crankshaft Adapter 1


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