Komatsu SAA6D125E-5-FR Cylinder Block Parts Hub

Komatsu SAA6D125E-5-FR Cylinder Block 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 SAA6D125E-5-FR Cylinder Block 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.

SAA6D125E-5-FR — Cylinder Block (#660001-)

Komatsu SAA6D125E-5-FR Cylinder Block Parts diagram ENGINES/0000180c/b011001a.png
ENGINES/0000180c/b011001a.png · 16 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 6150-21-1490 Bushing, Camshaft 7 SN: 660001-UP
5 04020-00514 Pin, Dowel 2 SN: 660001-UP
7 01643-31645 Washer 14 SN: 660001-UP
8 07043-70108 Plug 8 SN: 660001-UP
9 07043-70211 Plug 3 SN: 660001-UP
11 07040-12414 Plug 1 SN: 660001-UP
13 07002-23034 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
14 07002-22434 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
15 07046-43016 Plug 3 SN: 660001-UP
16 07046-44016 Plug 1 SN: 660001-UP
18 07000-72022 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
20 04020-00820 Pin, Dowel 12 SN: 660001-UP
25 6150-21-4770 Pin, Dowel 2 SN: 660001-UP
29 6150-21-2230 O-Ring,Lower 6 SN: 660001-UP, KIT-FLAG: S
30 6251-21-2240 O-Ring,Center 6 SN: 660001-UP, KIT-FLAG: S
31 6150-21-2250 Seal, Crevice 6 SN: 660001-UP, KIT-FLAG: S

SAA6D125E-5-FR — Cylinder Block Accessory (#660001-)

Komatsu SAA6D125E-5-FR Cylinder Block Parts diagram ENGINES/0000180c/b012001a.png
ENGINES/0000180c/b012001a.png · 14 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
6 07042-70312 Plug 2 SN: 660001-UP
8 07005-01412 Seal, Washer 2 SN: 660001-UP
10 6150-21-1190 O-Ring 2 SN: 660001-UP, KIT-FLAG: S
13 07000-03030 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
14 07000-02021 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
15 01435-01020 Bolt 1 SN: 660001-UP
16 01435-01020 Bolt 1 SN: 660001-UP
17 6219-81-1961 Sensor Assembly 1 SN: 660001-UP
17 6219-81-1991 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
19 6210-21-1971 Gasket 1 SN: 660001-UP, KIT-FLAG: S
21 01435-01025 Bolt 4 SN: 660001-UP
23 6206-21-6871 Gasket 1 SN: 660001-UP, KIT-FLAG: S
24 01435-01020 Bolt 2 SN: 660001-UP
25 07046-42816 Plug 1 SN: 660124-UP

SAA6D125E-5-FR — Piston And Connecting Rod (#660001-)

Komatsu SAA6D125E-5-FR Cylinder Block Parts diagram ENGINES/0000180c/b015001a.png
ENGINES/0000180c/b015001a.png · 12 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
1 6251-31-2510 Piston 3 SN: 660001-UP
2 6151-31-2410 Pin, Piston 6 SN: 660001-UP
3 04065-04818 Ring, Snap 12 SN: 660001-UP
3 6251-31-2030 Piston Ring Assembly, Per Cylinder 6 SN: 660001-UP
6 6251-31-3100 Connecting Rod Assembly 6 SN: 660001-UP
10 6150-31-3310 Bolt 2 SN: 660001-UP
11 02400-10413 Pin, Dowel 2 SN: 660001-UP
13 6151-31-3050 Metal Assembly, Standard 6 SN: 660001-UP
14 6151-39-3050 Metal Assembly, Undersize 0.25Mm 6 SN: 660001-UP
15 6151-38-3050 Metal Assembly, Undersize 0.50Mm 6 SN: 660001-UP
16 6151-37-3050 Metal Assembly, Undersize 0.75Mm 6 SN: 660001-UP
17 6151-36-3050 Metal Assembly, Undersize 1.00Mm 6 SN: 660001-UP

SAA6D125E-5-FR — Engine Oil Pan (#660001-)

Komatsu SAA6D125E-5-FR Cylinder Block Parts diagram ENGINES/0000180c/b008001a.png
ENGINES/0000180c/b008001a.png · 17 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
2 6150-21-5813 Gasket 1 SN: 660001-UP, KIT-FLAG: S
3 01435-01025 Bolt 36 SN: 660049-UP
3 01435-01025 Bolt 35 SN: 660001-660048
5 07002-22434 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
6 6150-21-5650 Gauge, Oil Level 1 SN: 660001-UP
11 01435-01020 Bolt 1 SN: 660001-UP
14 01584-01008 Nut 1 SN: 660001-UP
15 6741-81-9220 Sensor 1 SN: 660001-UP
20 01435-01020 Bolt 1 SN: 660001-UP
21 01435-01030 Bolt 1 SN: 660001-UP
22 01643-31032 Washer 2 SN: 660036-UP
22 01643-31032 Washer 1 SN: 660001-660035
24 07000-73045 O-Ring 1 SN: 660001-UP, KIT-FLAG: S
29 01643-31032 Washer 1 SN: 660001-UP
31 01643-31032 Washer 1 SN: 660001-UP
32 01580-01008 Nut 1 SN: 660001-UP
33 01643-31032 Washer 1 SN: 660001-UP

SAA6D125E-5-FR — Crankshaft (#660001-)

Komatsu SAA6D125E-5-FR Cylinder Block Parts diagram ENGINES/0000180c/b013001a.png
ENGINES/0000180c/b013001a.png · 10 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
0 6151-35-1010 Crankshaft Assembly 1 SN: 660001-UP
2 6150-35-1120 Gear, Crankshaft 1 SN: 660001-UP
4 6150-21-8010 Main Metal Assembly, Standard 7 SN: 660001-UP
5 6150-29-8010 Main Metal Assembly, Undersize 0.25Mm 7 SN: 660001-UP
6 6150-21-8050 Metal Assembly, Standard 1 SN: 660001-UP
6 6150-28-8010 Main Metal Assembly, Undersize 0.50Mm 7 SN: 660001-UP
6 6150-28-8050 Metal Assembly, Oversize 0.50Mm 1 SN: 660001-UP
6 6150-29-8050 Metal Assembly, Oversize 0.25Mm 1 SN: 660001-UP
7 6150-27-8010 Main Metal Assembly, Undersize 0.75Mm 7 SN: 660001-UP
8 6150-26-8010 Main Metal Assembly, Undersize 1.00Mm 7 SN: 660001-UP

SAA6D125E-5-FR — Flywheel Housing, (#660001-660921)

Komatsu SAA6D125E-5-FR Cylinder Block Parts diagram ENGINES/0000180c/b006001a.png
ENGINES/0000180c/b006001a.png · 10 listed callout rows
Diagram Ref. Part Number Description Qty Serial / Option Notes
3 01010-61650 Bolt 6 SN: 660001-@
4 01010-61660 Bolt 2 SN: 660001-@
6 6151-21-4161 Seal,Rear 1 SN: 660001-@, KIT-FLAG: S
8 01010-61665 Bolt 2 SN: 660001-@
9 6261-81-2901 Sensor Assembly, Speed 1 SN: 660001-660139, SCC: A2
9 6261-81-2902 Sensor Assembly 1 SN: 660140-@
9 6271-81-9220 O-Ring 1 SN: 660001-@, KIT-FLAG: S
10 01435-00820 Bolt 1 SN: 660001-660921
12 07005-02216 Seal, Washer 1 SN: 660001-@, KIT-FLAG: S
13 09920-00150 Liquid Gasket, Lg-7, 150G - SN: 660001-@, KIT-FLAG: S

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SAA6D125E-5-FR Cylinder Block Parts lookup notes

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

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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.