Komatsu Engine Exhaust System Parts Hub

Komatsu Engine Exhaust System Parts brings together Komatsu engine listings by major repair system. This helps buyers who know the engine area they are working in but still need to confirm the exact part number, product code, diagram context, or related engine model.

Diagram callout lookup for Komatsu Engine Exhaust System Parts

Use each diagram together with the table directly below it. The Diagram Ref. column corresponds to the location number shown on that specific image. Clickable part numbers link to matching 19PARTS product pages where a product match exists.

S6D155-4-R — Exhaust Manifold And Muffler(#30551-)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d1558c/030080a.png
ENGINES/s6d1558c/030080a.png · 27 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
4 07042-00108 Plug 2 SN: 30551-UP
8 6127-11-5810 Gasket (Kit) 6 SN: 30551-UP
9 6127-11-5190 Lock (Kit) 6 SN: 30551-UP
10 01011-E1210 Bolt 12 SN: 57335-UP
10 The part specified in the line above can be used instead of this part01011-61210 Bolt 12 SN: 30551-57334
11 01011-E1225 Bolt 6 SN: 57335-UP
11 The part specified in the line above can be used instead of this part01011-61225 Bolt 6 SN: 30551-57334
12 6127-11-5180 Spacer 12 SN: 30551-UP
13 6128-21-6730 Spacer 1 SN: 30551-UP
15 6127-81-2810 Gasket (Kit) 1 SN: 30551-UP
18 6128-81-2830 Ring,Seal 3 SN: 30551-UP
25 6128-11-5481 Gasket 1 SN: 30551-UP
34 01580-11008 Nut 2 SN: 56577-57334
34 01580-11411 Nut 1 SN: 57335-UP
38 6127-11-5180 Spacer 3 SN: 30551-UP
40 6127-11-5480 Shim, 0.1Mm (Kit) 2 SN: 30551-UP
40 6127-11-5490 Shim, 0.3Mm (Kit) 3 SN: 30551-UP
43 01641-21016 Washer 1 SN: 30551-UP
44 01602-01030 Washer,Spring 1 SN: 30551-UP
45 01010-31040 Bolt 1 SN: 30551-UP
47 01010-E1225 Bolt 1 SN: 57335-UP
47 The part specified in the line above can be used instead of this part01010-31225 Bolt 1 SN: 30551-57334
48 01602-01236 Washer,Spring 1 SN: 30551-UP
50 01582-01210 Nut 3 SN: 30551-UP
52 01050-61260 Bolt 2 SN: 30551-UP
53 01010-E1290 Bolt 1 SN: 57335-UP
54 6127-11-5180 Spacer 1 SN: 30551-UP

S6D155-4A — Exhaust Manifold And Muffler(#14257-40560)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d155r/030140a.png
ENGINES/s6d155r/030140a.png · 28 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
5 07042-00108 Plug 2 SN: .-@
6 07003-01015 Gasket (K1) 2 SN: 14257-14544
8 07003-01824 Gasket (K1) 2 SN: 14257-14544
12 6127-11-5810 Gasket (K1) 6 SN: 14257-@
13 6127-11-5190 Lock (K1) 6 SN: 14257-@
14 01011-61210 Bolt 12 SN: 14257-@
15 6127-11-5180 Spacer 12 SN: 14257-@
17 6127-81-2810 Gasket (K1) 1 SN: 14257-@
20 6128-81-2830 Ring 3 SN: 14257-@
25 01580-00806 Nut 4 SN: 14257-.
26 6128-11-5481 Gasket 1 SN: 14257-@
33 6127-11-5180 Spacer 3 SN: 14257-@
35 6127-11-5480 Shim¤ 0.1Mm 2 SN: 14257-@
35 6127-11-5490 Shim¤ 0.3Mm 3 SN: 14257-@
38 01641-21016 Washer 1 SN: 14257-@
39 01602-01030 Washer,(See Fig.Chassis) 1 SN: 14257-.
40 01010-31040 Bolt,(See Fig.Chassis) 1 SN: 14257-.
42 01010-31225 Bolt 1 SN: 14257-@
43 01602-01236 Washer 1 SN: 14257-@
45 01582-01210 Nut 2 SN: 14257-@
46 01010-61270 Bolt 1 SN: ...-@
47 01010-61260 Bolt 1 SN: 14257-...
48 01010-61290 Bolt 1 SN: 14257-...
49 6127-11-5180 Spacer 1 SN: 14257-@
14A 01011-61210 Bolt 6 SN: 14257-24804
14A 01011-61225 Bolt,(See Fig.1521A) 6 SN: 24805-@
15A 6127-11-5180 Spacer 6 SN: 14257-24804
15A 6128-21-6730 Spacer,(See Fig.1521A) 1 SN: 24805-@

S6D155-4A — Exhaust Manifold And Muffler(#14257-40560)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d155c/030140a.png
ENGINES/s6d155c/030140a.png · 28 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
5 07042-00108 Plug 2 SN: .-@
6 07003-01015 Gasket (K1) 2 SN: 14257-14544
8 07003-01824 Gasket (K1) 2 SN: 14257-14544
12 6127-11-5810 Gasket (K1) 6 SN: 14257-@
13 6127-11-5190 Lock (K1) 6 SN: 14257-@
14 01011-61210 Bolt 12 SN: 14257-@
15 6127-11-5180 Spacer 12 SN: 14257-@
17 6127-81-2810 Gasket (K1) 1 SN: 14257-@
20 6128-81-2830 Ring 3 SN: 14257-@
25 01580-00806 Nut 4 SN: 14257-.
26 6128-11-5481 Gasket 1 SN: 14257-@
33 6127-11-5180 Spacer 3 SN: 14257-@
35 6127-11-5480 Shim, 0.1Mm 2 SN: 14257-@
35 6127-11-5490 Shim, 0.3Mm 3 SN: 14257-@
38 01641-21016 Washer 1 SN: 14257-@
39 01602-01030 Washer,(See Fig.Chassis) 1 SN: 14257-.
40 01010-31040 Bolt,(See Fig.Chassis) 1 SN: 14257-.
42 01010-31225 Bolt 1 SN: 14257-@
43 01602-01236 Washer 1 SN: 14257-@
45 01582-01210 Nut 2 SN: 14257-@
46 01010-61270 Bolt 1 SN: ...-@
47 01010-61260 Bolt 1 SN: 14257-...
48 01010-61290 Bolt 1 SN: 14257-...
49 6127-11-5180 Spacer 1 SN: 14257-@
14A 01011-61210 Bolt 6 SN: 14257-24804
14A 01011-61225 Bolt,(See Fig.1521A) 6 SN: 24805-@
15A 6127-11-5180 Spacer 6 SN: 14257-24804
15A 6128-21-6730 Spacer,(See Fig.1521A) 1 SN: 24805-@

S6D155-4B — Exhaust Manifold And Muffler(#14281-40560)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d1550c/030160a.png
ENGINES/s6d1550c/030160a.png · 28 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
5 07042-00108 Plug 2 SN: .-@
6 07003-01015 Gasket (K1) 2 SN: 14281-14412
8 07003-01824 Gasket (K1) 2 SN: 14281-14412
12 6127-11-5810 Gasket (K1) 6 SN: 14281-@
13 6127-11-5190 Lock (K1) 6 SN: 14281-@
14 01011-61210 Bolt 12 SN: 14281-@
15 6127-11-5180 Spacer 12 SN: 14281-@
17 6127-81-2810 Gasket (K1) 1 SN: 14281-@
20 6128-81-2830 Ring 3 SN: 14281-@
25 01580-00806 Nut 4 SN: 14281-.
26 6128-11-5481 Gasket 1 SN: 14281-@
33 6127-11-5180 Spacer 3 SN: 14281-@
35 6127-11-5480 Shim, 0.1Mm 2 SN: 14281-@
35 6127-11-5490 Shim, 0.3Mm 3 SN: 14281-@
38 01641-21016 Washer 1 SN: 14281-@
39 01602-01030 Washer,(See Fig.Chassis) 1 SN: 14281-.
40 01010-31040 Bolt,(See Fig.Chassis) 1 SN: 14281-.
42 01010-31225 Bolt 1 SN: 14281-@
43 01602-01236 Washer 1 SN: 14281-@
45 01582-01210 Nut 2 SN: 14281-@
46 01010-61270 Bolt 1 SN: ...-@
47 01010-61260 Bolt 1 SN: 14281-...
48 01010-61290 Bolt 1 SN: 14281-...
49 6127-11-5180 Spacer 1 SN: 14281-@
14A 01011-61210 Bolt 6 SN: 14281-24804
14A 01011-61225 Bolt,(See Fig.1521A) 6 SN: 24805-@
15A 6127-11-5180 Spacer 6 SN: 14257-24804
15A 6128-21-6730 Spacer,(See Fig.1521A) 1 SN: 24805-@

S6D125-1R — Cylinder Head (With Exhaust Brake)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d1256c/030030a.png
ENGINES/s6d1256c/030030a.png · 22 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 6136-11-1130 Sleeve 1 SN: 16790-UP
3 6150-11-1331 Insert,Intake Valve (Std) 2 SN: 16790-UP
3 6150-19-1331 Insert¤ 0.25Mm,Intake Valve (Os) 2 SN: 16790-UP
4 6150-11-1320 Insert,Exhaust Valve (Std) 2 SN: 16790-UP
4 6150-19-1320 Insert¤ 0.25Mm,Exhaust Valve (Os) 2 SN: 16790-UP
5 6150-12-1341 Guide,Intake Valve 2 SN: 16790-UP
6 6150-12-1351 Guide,Exhaust Valve 2 SN: 16790-UP
7 6150-11-1140 Guide 2 SN: 16790-UP
8 6162-13-1150 Plug 8 SN: 16790-UP
9 04020-00820 Pin,Dowel 2 SN: 16790-UP
10 6150-41-4111 Valve,Intake 2 SN: 16790-UP
12 6150-41-4540 Rotator,Intake Valve 2 SN: 16790-UP
13 6140-41-4540 Seal,Exhaust Valve (K1) 2 SN: 16790-UP
14 6150-41-4430 Seat,Lower 2 SN: 16790-UP
15 6150-41-4510 Seat,Upper 4 SN: 16790-UP
16 6136-42-4520 Cotter 8 SN: 16790-UP
17 6150-41-4420 Spring,Intake 2 SN: 16790-UP
18 6150-41-4450 Spring,Exhaust 2 SN: 16790-UP
25 6150-17-1812 Gasket 6 SN: 16790-UP
26 6150-11-1920 Grommet,Oil 1 SN: 16790-UP
27 6150-11-1930 Grommet,Oil 1 SN: 16790-UP
29 6150-11-1610 Bolt 36 SN: 16790-UP

S6D125-1R — Cylinder Head (With Exhaust Brake)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d125dr/030030a.png
ENGINES/s6d125dr/030030a.png · 22 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 6136-11-1130 Sleeve 1 SN: 16790-UP
3 6150-11-1331 Insert,Intake Valve (Std) 2 SN: 16790-UP
3 6150-19-1331 Insert¤ 0.25Mm,Intake Valve (Os) 2 SN: 16790-UP
4 6150-11-1320 Insert,Exhaust Valve (Std) 2 SN: 16790-UP
4 6150-19-1320 Insert¤ 0.25Mm,Exhaust Valve (Os) 2 SN: 16790-UP
5 6150-12-1341 Guide,Intake Valve 2 SN: 16790-UP
6 6150-12-1351 Guide,Exhaust Valve 2 SN: 16790-UP
7 6150-11-1140 Guide 2 SN: 16790-UP
8 6162-13-1150 Plug 8 SN: 16790-UP
9 04020-00820 Pin,Dowel 2 SN: 16790-UP
10 6150-41-4111 Valve,Intake 2 SN: 16790-UP
12 6150-41-4540 Rotator,Intake Valve 2 SN: 16790-UP
13 6140-41-4540 Seal,Exhaust Valve (K1) 2 SN: 16790-UP
14 6150-41-4430 Seat,Lower 2 SN: 16790-UP
15 6150-41-4510 Seat,Upper 4 SN: 16790-UP
16 6136-42-4520 Cotter 8 SN: 16790-UP
17 6150-41-4420 Spring,Intake 2 SN: 16790-UP
18 6150-41-4450 Spring,Exhaust 2 SN: 16790-UP
25 6150-17-1812 Gasket 6 SN: 16790-UP
26 6150-11-1920 Grommet,Oil 1 SN: 16790-UP
27 6150-11-1930 Grommet,Oil 1 SN: 16790-UP
29 6150-11-1610 Bolt 36 SN: 16790-UP

S6D125-1VV-FA — Cylinder Head (With Exhaust Brake)(#16790-)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d120jc/030030a.png
ENGINES/s6d120jc/030030a.png · 22 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 6136-11-1130 Sleeve 1 SN: 16790-UP
3 6150-11-1331 Insert,Intake Valve (Std) 2 SN: 16790-UP
3 6150-19-1331 Insert, 0.25Mm,Intake Valve (Os) 2 SN: 16790-UP
4 6150-11-1320 Insert,Exhaust Valve (Std) 2 SN: 16790-UP
4 6150-19-1320 Insert, 0.25Mm,Exhaust Valve (Os) 2 SN: 16790-UP
5 6150-12-1341 Guide,Intake Valve 2 SN: 16790-UP
6 6150-12-1351 Guide,Exhaust Valve 2 SN: 16790-UP
7 6150-11-1140 Guide 2 SN: 16790-UP
8 6162-13-1150 Plug 8 SN: 16790-UP
9 04020-00820 Pin,Dowel 2 SN: 16790-UP
10 6150-41-4111 Valve,Intake 2 SN: 16790-UP
12 6150-41-4540 Rotator,Intake Valve 2 SN: 16790-UP
13 6140-41-4540 Seal,Exhaust Valve (K1) 2 SN: 16790-UP, KIT-FLAG: S
14 6150-41-4430 Seat,Lower 2 SN: 16790-UP
15 6150-41-4510 Seat,Upper 4 SN: 16790-UP
16 6136-42-4520 Cotter 8 SN: 16790-UP
17 6150-41-4420 Spring,Intake 2 SN: 16790-UP
18 6150-41-4450 Spring,Exhaust 2 SN: 16790-UP
25 6150-17-1812 Gasket 6 SN: 16790-UP, KIT-FLAG: S
26 6150-11-1920 Grommet,Oil 1 SN: 16790-UP
27 6150-11-1930 Grommet,Oil 1 SN: 16790-UP
29 6150-11-1610 Bolt 36 SN: 16790-UP

S6D155-4A — Exhaust Manifold And Muffler(#40561-)

Komatsu Engine Exhaust System Parts diagram ENGINES/s6d155r/030150a.png
ENGINES/s6d155r/030150a.png · 25 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
4 07042-00108 Plug 2 SN: .-UP
8 6127-11-5810 Gasket (K1) 6 SN: 14257-UP
9 6127-11-5190 Lock (K1) 6 SN: 14257-UP
10 01011-61210 Bolt 12 SN: 14257-UP
11 01011-61225 Bolt,(See Fig.1521B) 6 SN: 24805-UP
12 6127-11-5180 Spacer 12 SN: 14257-UP
13 6128-21-6730 Spacer,(See Fig.1521B) 1 SN: 24805-UP
15 6127-81-2810 Gasket (K1) 1 SN: 14257-UP
18 6128-81-2830 Ring 3 SN: 14257-UP
23 6128-11-5481 Gasket (K1) 1 SN: 14257-UP
28 6127-11-5180 Spacer 3 SN: 14257-UP
30 6127-11-5480 Shim¤ 0.1Mm 3 SN: 14257-UP
30 6127-11-5490 Shim¤ 0.3Mm 3 SN: 14257-UP
33 01641-21016 Washer 1 SN: 14257-UP
34 01602-01030 Washer,(See Fig.Chassis) 1 SN: 14257-.
35 01010-31040 Bolt,(See Fig.Chassis) 1 SN: 14257-.
37 01010-31225 Bolt 1 SN: 14257-UP
38 01602-01236 Washer 1 SN: 14257-UP
40 01582-01210 Nut 3 SN: .-UP
40 01582-01210 Nut 2 SN: 14257-.
41 01010-61270 Bolt 2 SN: ...-UP
41 01010-61270 Bolt 1 SN: ..-...
43 01010-61290 Bolt 1 SN: ..-UP
44 6127-11-5180 Spacer 1 SN: 14257-UP
51 01580-11008 Nut 2 SN: 40561-UP

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How to use this engine system hub

Use this hub to narrow Komatsu engine exhaust system parts by part number, description, and related engine model.

Many Komatsu engine repairs involve small differences by serial range and arrangement. Use this hub as a practical starting point, then confirm the exact part number against your engine book or serial-specific reference.

Featured Komatsu exhaust system parts

This hub includes 272 linked product listings. Use the collection link above to browse the full set.

Parts-book verification before ordering

Komatsu engine parts often change by engine arrangement, serial range, diagram callout, and option note. 19PARTS uses engine-model organization to help you move from a broad Komatsu part number search into a tighter reference path, but final fitment should always be confirmed against your engine serial number and parts book.

Our Keep Ops Moving approach is simple: give buyers cleaner lookup paths, clear part-number references, and practical cross-navigation so rebuild shops, fleet teams, mechanics, and equipment owners can identify the right components faster.