Cummins / Cummins Parts / Cylinder Head, Engine Block, Camshaft, Crankshaft / Diesel Engine Parts Cummins ISB6.7 QSB6.7 Base Engine Parts
Diesel Engine Parts Cummins ISB6.7 QSB6.7 Base Engine Parts Diesel Engine Parts Cummins ISB6.7 QSB6.7 Base Engine Parts
Diesel Engine Parts Cummins ISB6.7 QSB6.7 Base Engine Parts Diesel Engine Parts Cummins ISB6.7 QSB6.7 Base Engine Parts

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Diesel Engine Parts Cummins ISB6.7 QSB6.7 Base Engine Parts

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Cummins ISB6.7 QSB6.7 Base Engine Parts

  • ISB6.7 QSB6.7 Base Engine Parts

  • Cummins

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The table shows the Cummins QSB6.7 ISB6.7 engine parts number and quantity

Base Part Number Product Name Quantity Dimensions

QSB6.7 Engine Cylinder Block Ref

Cylinder Block


 3678873 Threaded Plug 2 M18 X 1.5 X 19.5
1 3678786 O Ring Seal 1
2 3678791 Threaded Plug 1 M18 X 1.5 X 19.5

3678921 Threaded Plug 1 M14 X 1.5 X 16
3 3678912 O Ring Seal 1 M14
4 3678922 Threaded Plug 1 M14 X 1.5 X 16

3678923 Threaded Plug 1 M10 X 1.00 X 13.5
5 3678924 Threaded Plug 1 M10 X 1.00 X 13.5
6 3678925 O Ring Seal 1
7 3902343 Ring Dowel 2
8 3936352 Studded Flange Cap Screw 2
9 3902460 Hex Flange Head Cap Screw 10 M10 X 1.50 X 25.
10 3949830 Round Head Cap Screw 1 M10 X 1.50 X 25
11 3965764 Cylinder Block Stiffener 1
superseded part 4946586 Cylinder Block 1
12 3927948 Fracture Resistant Screw 14
13 3940059 Bushing 2
superseded part 3974157 Main Bearing Cap 6
14 3900068 Ring Dowel 2
15 3974156 Main Bearing Cap 1

3974159 Main Bearing Cap 1
14 3900068 Ring Dowel 2
16 3974158 Main Bearing Cap 1
17 4938189 Expansion Plug 4
18 4946585 Cylinder Block 1
19 3900956 Expansion Plug 2
20 3905401 Expansion Plug 3
21 3007635 Expansion Plug 3

4919951 Salvage Sleeve A/R

QSB6.7 Cylinder Head Ref

Cylinder Head

1 3927063 Fracture Resistant Screw 26
2 4932210 Cylinder Head Gasket 1
superseded part 4988954 Cylinder Head 1

3802967 Exhaust Valve Kit 12
3 3940123 Valve Collet 2
4 superseded part 3940734 Exhaust Valve 1

3802924 Intake Valve Kit 12
3 3940123 Valve Collet 2
5 superseded part 3940735 Intake Valve 1
6 3955393 Valve Stem Seal 1
6 3955393 Valve Stem Seal 12
7 superseded part 4936080 Valve Spring 24
8 3943198 Valve Spring Retainer 24

4988953 Cylinder Head 1
9 3914035 Expansion Plug 13
10 3920706 Expansion Plug 11
11 4983047 Cylinder Head 1
12 3007632 Expansion Plug 7
13 3945094 Expansion Plug 2
14 3945095 Expansion Plug 2
15 3943449 Valve Insert 12
16 3943450 Valve Insert 12
15 3939719 Valve Insert A/R
15 3939720 Valve Insert A/R
15 3939721 Valve Insert A/R
16 superseded part 3939723 Valve Insert A/R
16 superseded part 3939724 Valve Insert A/R
16 superseded part 3939725 Valve Insert A/R

QSB6.7 Camshaft Ref

Camshaft


 3954100 Camshaft 1
1 3954111 Ring Dowel 1
2 3955069 Speed Indicator Ring 1

3979506 Camshaft 1
3 3904483 Pin Dowel 1
4 3954099 Camshaft 1
5 4895877 Socket Head Cap Screw 2
3 3904483 Pin Dowel 1
6 3093730 Hex Flange Head Cap Screw 6 M8 X 1.25 X 25.
7 5258931 Camshaft Thrust Support 1
8 3925883 Hex Flange Head Cap Screw 2 M8 X 1.25 X 16.
9 3955152 Camshaft Gear 1

QSB6.7 Crankshaft And Bearings Ref

Crankshaft And Bearings

superseded   part 3974635 Engine Crankshaft 1
1 3904483 Pin Dowel 1
superseded part 3974538 Engine Crankshaft 1
2 2831066 Shaft Collar 1
 3 superseded part 3968164 Engine Crankshaft 1
4 superseded part 3955151 Crankshaft Gear 1
5 superseded part 3955150 Crankshaft Gear 1
superseded part 3357480 Pdc Kit A/R
6 superseded part 3927772 Crankshaft Thrust Bearing 1
7 superseded part 3929016 Main Bearing 6
8 superseded part 3929021 Main Bearing 7
superseded part 3802071 Main Brg(.010) Set A/R
6 superseded part 3283065 Crankshaft Thrust Bearing 1
7 superseded part 3929017 Main Bearing 6
8 superseded part 3929022 Main Bearing 7
superseded part 3802072 Main Brg(.020) Set A/R
6 superseded part 3283066 Crankshaft Thrust Bearing 1
7 superseded part 3929018 Main Bearing 6
8 superseded part 3929023 Main Bearing 7
superseded part 3802073 Main Brg(.030) Set A/R
6 superseded part 3283067 Crankshaft Thrust Bearing 1
7 superseded part 3929019 Main Bearing 6
8 superseded part 3929024 Main Bearing 7
superseded part 3802074 Main Brg(.040) Set A/R
6 superseded part 3283068 Crankshaft Thrust Bearing 1
7 superseded part 3929019 Main Bearing 6
8 superseded part 3929024 Main Bearing 7

QSB6.7 Rear Gear Housing Ref

Rear Gear Housing

1 3918153 Hex Flange Head Cap Screw 3 M10 X 1.50 X 50
2 3901445 Hex Flange Head Cap Screw 4 M8 X 1.25 X 45
3 3903112 Hex Flange Head Cap Screw 2 M10 X 1.50 X 30.
4 3910495 Hex Flange Head Cap Screw 1 M12 X 1.75 X 30.

3971016 Gear Housing 1
5 3954616 Ring Dowel 2
6 3971013 Gear Housing 1
7 4929128 Threaded Insert 2

QSB6.7 Rocker Lever Ref

Rocker Lever

1 3900633 Hex Flange Head Cap Screw 2 M8 X 1.25 X 50
2 3903096 Hex Flange Head Cap Screw 5 M8 X 1.25 X 70.
3 3941253 Push Rod 12
4 3943626 Valve Crosshead 12
superseded part 4928698 Rocker Lever Assembly 6

3937219 Rocker Lever 1
5 3935945 Socket Retainer 1
6 3935946 Rocker Lever Socket 1

3942735 Rocker Lever 1
7 3927692 Heavy Hexagon Nut 1
8 3941928 Rocker Lever 1
9 3942730 Rocker Lever Ball 1
10 3959128 Rkr Lever Adjusting Screw 1

3937220 Rocker Lever 1
5 3935945 Socket Retainer 1
6 3935946 Rocker Lever Socket 1

3942734 Rocker Lever 1
7 3927692 Heavy Hexagon Nut 1
9 3942730 Rocker Lever Ball 1
10 3959128 Rkr Lever Adjusting Screw 1
11 3941927 Rocker Lever 1
12 3964908 Rocker Lever Support 1
13 3990127 Hex Flange Head Cap Screw 2 M8 X 1.25 X 55.
14 4928699 Rocker Lever Shaft 2

4934573 Rocker Lever Housing 1
15 3287699 Wiring Harness 3
16 3287727 Wire Retaining Clip 6
17 3913638 Hex Flange Head Cap Screw 3 M6 X 1.00 X 16.
18 4890404 Wire Retaining Clip 3
19 4896991 Stud 6
20 4899231 Rkr Lever Housing Gasket 1
superseded part 4899257 Rocker Lever Housing 1
21 4899235 Rocker Lever Housing 1
22 4899245 Sleeve 5

QSB6.7 Valve Cover Arrangement Ref

Valve Cover Arrangement

1 4893936 Hexagon Flange Nut 6 M8 X 1.25

3976167 Valve Cover 1
superseded part 4895459 Filler Cap 1
2 superseded part 4895460 Filler Cap 1
3 superseded part 4895461 Filler Cap Gasket 1
superseded part 3968862 Valve Cover 1
4 4898648 Breather Baffle 1

2831347 Valve Cover 1
5 3945095 Expansion Plug 1
6 2831325 Valve Cover 1
7 4899188 Rivet 8
8 superseded part 4899226 Valve Cover Gasket 1
9 superseded part 4899239 Noise Isolator 6

QSB6.7 Connecting Rod And Piston Ref

Connecting Rod And Piston


superseded   part 3971212 Engine Connecting Rod 6
1 3971211 Engine Connecting Rod 1
2 4891179 Connecting Rod Cap Screw 2
3 4891178 Bushing 1
4 3969562 Connecting Rod Bearing 6
5 4893693 Connecting Rod Bearing 6
6 superseded part 4955160 Engine Piston Kit 6
superseded part 4934860 Engine Piston 1
7 4931041 Piston Pin 1
8 4955251 Piston Ring Set 1

3976339 Compression Piston Ring 1

4932587 Compression Piston Ring 1

4932801 Oil Piston Ring 1
9 3920691 Retaining Ring 12
10 4937308 Piston Cooling Nozzle 6
11 3964817 Banjo Connector Screw 6
6 superseded part 4955481 Engine Piston .50 Mm Kit A/R
superseded part 4934816 Engine Piston 1
8 4955480 Piston Ring .50 Mm Set 1
4 superseded part 3901171 Connecting Rod Bearing A/R
4 superseded part 3901172 Connecting Rod Bearing A/R
4 superseded part 3901173 Connecting Rod Bearing A/R
4 superseded part 3901174 Connecting Rod Bearing A/R
5 4892795 Connecting Rod Bearing A/R
5 4892796 Connecting Rod Bearing A/R
5 4892797 Connecting Rod Bearing A/R
5 4892798 Connecting Rod Bearing A/R

QSB6.7 Valve Tappets Ref

Valve Tappets

1 3947759 Valve Tappet 12

QSB6.7 Coolant Heater Starting Ai Ref

Coolant Heater Starting Ai

1 4933532 Pipe Plug 1
2 4938189 Expansion Plug 1


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