Komatsu SA6D155-4A Cylinder Head Parts Hub

Komatsu SA6D155-4A Cylinder Head Parts is a focused 19PARTS hub for buyers working inside a specific Komatsu engine model and repair system. It is meant to reduce guesswork by tying engine-model navigation to related product listings and part-number references.

Diagram callout lookup for Komatsu SA6D155-4A Cylinder Head 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.

SA6D155-4A — Water Manifold And Thermostat

Komatsu SA6D155-4A Cylinder Head Parts diagram ENGINES/sa6d155c/030100a.png
ENGINES/sa6d155c/030100a.png · 28 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
8 07005-01612 Gasket (K1) 1 SN: 50816-UP
10 07281-00419 Clamp 1 SN: 50816-UP
11 The part specified in the line above can be used instead of this part01010-31030 Bolt 3 SN: 50816-57470
12 The part specified in the line above can be used instead of this part01010-31035 Bolt 9 SN: 50816-57470
13 01602-01030 Washer,Spring 12 SN: 50816-UP
15 07000-05075 O-Ring (K1) 1 SN: 50816-UP
16 07000-05065 O-Ring (K1) 1 SN: 50816-UP
18 07000-05055 O-Ring (K1) 2 SN: 50816-UP
20 600-421-6610 Thermostat 2 SN: 50816-UP
21 6162-13-6440 Seal (K1) 2 SN: 50816-UP
22 6127-11-6431 Gasket (K1) 1 SN: 55407-UP
22 The part specified in the line above can be used instead of this part6127-11-6430 Gasket (K1) 1 SN: 50816-55406
23 The part specified in the line above can be used instead of this part01011-31000 Bolt 6 SN: 50816-57470
24 01602-01030 Washer,Spring 6 SN: 50816-UP
26 6127-11-6471 Gasket (K1) 1 SN: 55407-UP
26 The part specified in the line above can be used instead of this part6127-11-6470 Gasket (K1) 1 SN: 50816-55406
28 The part specified in the line above can be used instead of this part01010-31080 Bolt 2 SN: 50816-57470
29 01010-81095 Bolt 2 SN: 57471-UP
30 01602-01030 Washer,Spring 4 SN: 50816-UP
31 07332-01200 Coupling 1 SN: 50816-UP
35 6128-61-6831 Gasket (K1) 2 SN: 56478-UP
35 The part specified in the line above can be used instead of this part6128-61-6830 Gasket (K1) 2 SN: 50816-56477
37 01602-00825 Washer,Spring 4 SN: 50816-UP
40 The part specified in the line above can be used instead of this part01010-31045 Bolt 1 SN: 50816-57470
41 01602-01030 Washer,Spring 1 SN: 50816-UP
42 01643-31232 Washer 1 SN: 50816-UP
43 6128-11-6812 Gasket (K1) 6 SN: 55407-UP
43 The part specified in the line above can be used instead of this part6128-11-6811 Gasket (K1) 6 SN: 50816-55406

SA6D155-4A — Air Intake Manifold And After Cooler

Komatsu SA6D155-4A Cylinder Head Parts diagram ENGINES/sa6d155c/030050a.png
ENGINES/sa6d155c/030050a.png · 26 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 07042-00108 Plug 1 SN: 50816-UP
4 The part specified in the line above can be used instead of this part6710-61-6340 O-Ring (K1) 4 SN: 50816-58926
7 6128-61-6841 Gasket (K1) 1 SN: 56478-UP
9 01602-00825 Washer,Spring 4 SN: 50816-UP
11 The part and the part specified in the line immediately above are interchangeable.6128-61-6830 Gasket (K1) 1 SN: 50816-56354
13 6128-11-4721 Gasket (K1) 2 SN: 58753-UP
13 The part specified in the line above can be used instead of this part6128-11-4720 Gasket (K1) 2 SN: 50816-58752
15 6127-11-4822 Gasket (K1) 3 SN: 56478-UP
15 The part specified in the line above can be used instead of this part6127-11-4820 Gasket (K1) 3 SN: 50816-56477
17 01602-01236 Washer,Spring 12 SN: 50816-UP
18 01640-21223 Washer 12 SN: 50816-UP
20 07042-00108 Plug 1 SN: 50816-UP
23 6128-11-4731 Gasket (K1) 1 SN: 56478-UP
23 The part specified in the line above can be used instead of this part6128-11-4730 Gasket (K1) 1 SN: 50816-56477
24 01010-80835 Bolt 2 SN: 57471-UP
26 01602-00825 Washer,Spring 4 SN: 50816-UP
27 01641-20812 Washer 4 SN: 50816-UP
30 02895-67091 O-Ring (K1) 4 SN: 50816-UP
31 6128-11-4310 Connector 1 SN: 50816-UP
32 02895-67116 O-Ring (K1) 2 SN: 50816-UP
34 01580-01008 Nut 8 SN: 50816-UP
35 01602-01030 Washer,Spring 8 SN: 50816-UP
36 01640-21016 Washer 8 SN: 50816-UP
38 The part specified in the line above can be used instead of this part01010-31025 Bolt 5 SN: 50816-57470
39 01602-01030 Washer,Spring 5 SN: 50816-UP
40 01641-21016 Washer 5 SN: 50816-UP

SA6D155-4A — Water Manifold And Thermostat

Komatsu SA6D155-4A Cylinder Head Parts diagram ENGINES/sa6d155r/030100a.png
ENGINES/sa6d155r/030100a.png · 23 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
8 07005-01612 Gasket 1 SN: 50816-UP
10 07281-00419 Clamp 1 SN: 50816-UP
11 01010-31030 Bolt 3 SN: 50816-UP
12 01010-31035 Bolt 9 SN: 50816-UP
13 01602-01030 Washer,Spring 12 SN: 50816-UP
15 07000-05075 O-Ring (K1) 1 SN: 50816-UP
16 07000-05065 O-Ring (K1) 1 SN: 50816-UP
18 07000-05055 O-Ring (K1) 2 SN: 50816-UP
20 600-421-6610 Thermostat 2 SN: 50816-UP
21 6162-13-6440 Seal (K1) 2 SN: 50816-UP
22 6127-11-6430 Gasket (K1) 1 SN: 50816-UP
23 01011-31000 Bolt 6 SN: 50816-UP
24 01602-01030 Washer,Spring 6 SN: 50816-UP
26 6127-11-6470 Gasket (K1) 1 SN: 50816-UP
28 01010-31080 Bolt 2 SN: 50816-UP
30 01602-01030 Washer,Spring 4 SN: 50816-UP
31 07332-01200 Coupling 1 SN: 50816-UP
31 07332-51200 Gasket (K1) 2 SN: 50816-UP
35 6128-61-6830 Gasket (K1) 2 SN: 50816-UP
37 01602-00825 Washer,Spring 4 SN: 50816-UP
40 01010-31045 Bolt 1 SN: 50816-UP
41 01602-01030 Washer,Spring 1 SN: 50816-UP
42 01643-31232 Washer 1 SN: 50816-UP

SA6D155-4A — Air Intake Manifold And After Cooler

Komatsu SA6D155-4A Cylinder Head Parts diagram ENGINES/sa6d155r/030050a.png
ENGINES/sa6d155r/030050a.png · 24 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 07042-00108 Plug 1 SN: 50816-UP
4 6710-61-6340 O-Ring (K1) 4 SN: 50816-UP
9 01602-00825 Washer,Spring 4 SN: 50816-UP
11 6128-61-6830 Gasket (K1) 1 SN: 50816-UP
13 01602-00825 Washer,Spring 4 SN: 50816-UP
14 6128-11-4720 Gasket (K1) 2 SN: 50816-UP
16 01602-00825 Washer,Spring 20 SN: 50816-UP
18 6127-11-4820 Gasket (K1) 3 SN: 50816-UP
20 01602-01236 Washer,Spring 12 SN: 50816-UP
21 01640-21223 Washer 12 SN: 50816-UP
23 07042-00108 Plug 1 SN: 50816-UP
26 6128-11-4730 Gasket (K1) 1 SN: 50816-UP
29 01602-00825 Washer,Spring 4 SN: 50816-UP
30 01641-20812 Washer 4 SN: 50816-UP
33 02895-67091 O-Ring (K1) 4 SN: 50816-UP
34 6128-11-4310 Connector 1 SN: 50816-UP
35 02895-67116 O-Ring (K1) 2 SN: 50816-UP
36 08670-01635 Indicator,Dust 1 SN: 50816-UP
38 01580-01008 Nut 8 SN: 50816-UP
39 01602-01030 Washer,Spring 8 SN: 50816-UP
40 01640-21016 Washer 8 SN: 50816-UP
42 01010-31025 Bolt 5 SN: 50816-UP
43 01602-01030 Washer,Spring 5 SN: 50816-UP
44 01641-21016 Washer 5 SN: 50816-UP

SA6D155-4A — Air Cleaner And Pre-Cleaner

Komatsu SA6D155-4A Cylinder Head Parts diagram ENGINES/sa6d155c/030060a.png
ENGINES/sa6d155c/030060a.png · 13 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
3 600-181-7511 Washer,Seal 1 SN: 50816-UP
3 6128-81-7043 Element Ass'Y 1 SN: 58246-UP
4 The part specified in the line above can be used instead of this part6128-81-7042 Element Ass'Y 1 SN: 50816-58245
6 600-181-4420 Nut,Wing 1 SN: 50816-UP
7 600-181-4440 Gasket 1 SN: 50816-UP
8 600-181-4401 Element Ass'Y,Outer 1 SN: 58246-UP
9 The part specified in the line above can be used instead of this part600-181-4400 Element Ass'Y,Outer 1 SN: 50816-58245
11 6127-81-4823 Gasket (K1) 1 SN: 56205-UP
11 The part specified in the line above can be used instead of this part6127-81-4821 Gasket (K1) 1 SN: 50816-56204
13 600-181-4870 Pre-Cleaner 1 SN: 50816-UP
15 07281-00609 Clamp 2 SN: 50816-UP
18 6128-11-5611 Gasket (K1) 2 SN: 58753-UP
18 The part specified in the line above can be used instead of this part6128-11-5610 Gasket (K1) 2 SN: 50816-58752

SA6D155-4A — Rocker Arm Housing Cover

Komatsu SA6D155-4A Cylinder Head Parts diagram ENGINES/sa6d155c/030030a.png
ENGINES/sa6d155c/030030a.png · 14 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
3 6127-11-8812 Gasket (K1) 3 SN: 50816-UP
4 The part specified in the line above can be used instead of this part01010-31080 Bolt 16 SN: 50816-57470
5 01602-01030 Washer,Spring 18 SN: 50816-UP
6 01640-21016 Washer 16 SN: 50816-UP
7 6127-11-8211 Breather Ass'Y 1 SN: 50816-UP
8 07000-72070 O-Ring (K1) 1 SN: 58779-UP
8 The part and the part specified in the line immediately above are interchangeable.07000-62070 O-Ring (K1) 1 SN: 50816-58778
9 01010-80822 Bolt 3 SN: 57471-UP
10 01602-00825 Washer,Spring 3 SN: 50816-UP
18 01602-00825 Washer,Spring 2 SN: 50816-UP
20 The part specified in the line above can be used instead of this part01010-31025 Bolt 2 SN: 50816-57470
21 01602-01030 Washer,Spring 2 SN: 50816-UP
22 01580-01008 Nut 1 SN: 50816-UP
4A 01010-81085 Bolt 2 SN: 57471-UP

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SA6D155-4A Cylinder Head Parts lookup notes

Use this hub when the repair has already been narrowed to cylinder head parts. Confirm each part against the engine serial range, parts-book callout, quantity, and option notes before ordering.

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Featured parts in this hub

This hub includes 57 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.