12V 40A Alternator YM129423-77200 Fits for Komatsu Engine 3D76E 3D82AE 3D84E 3D88E 4D88 4D88E S3D84 S3D84E
12V 40A Alternator YM129423-77200 Fits for Komatsu Engine 3D76E 3D82AE 3D84E 3D88E 4D88 4D88E S3D84 S3D84E is backordered and will ship as soon as it is back in stock.
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Description
Description
12V 40A Alternator YM129423-77200 Fits for Komatsu Engine 3D76E 3D82AE 3D84E 3D88E 4D88 4D88E S3D84 S3D84E
Replace Part Number: YM129423-77200, YM12942377200, 129423-77200,
12942377200
Specification: Voltage: 12V
Amperage: 40A
Fit For Komatsu Engine: 3D76E-5, 3D76E-6, 3D82AE-5, 3D82AE-6, 3D84E-5, 3D88E-6, 4D88-6, 4D88E-5, 4D88E-6, S3D84-5, S3D84E-5
Application: Fit For Komatsu Skid Steer Loader: CK20-1, CK25-1, CK30-1, CK35-1, SK1020-5, SK1026-5N, SK714-5, SK815-5, SK818-5, SK820-5
Fit For Komatsu Excavator: PC20MR-2, PC22MR-3, PC26MR-3, PC27MR-2, PC27R-8, PC30MR-2, PC30MR-3, PC35MR-2, PC35MR-3, PC35R-8, PC45MR-3, PC45R-8, PC50MR-2, PC55MR-3
Fitment details: Fit For Komatsu Engine
3D76E-5N-BA S/N 00101-UP
3D76E-6 S/N 04469-UP (For PC20MR-3)
3D82AE-5M-BA S/N 00246-UP
3D82AE-6 S/N 04634-UP (For PC27MR-3)
3D82AE-6BM-DA S/N 04634-UP
3D84E-5X-AB S/N 00101-UP
3D88E-6 S/N 06564-UP (For PC30MR-3/PC35MR-3)
3D88E-6BP-DA S/N 06564-UP
4D88-6 S/N 16615-UP (For WA50-6)
4D88E-5X-AB S/N 00101-UP
4D88E-5X-AC S/N 00101-UP
4D88E-5X-BB S/N 00101-UP
4D88E-5X-BC S/N 00101-UP
4D88E-6 S/N 14803-UP (For PC45MR-3)
4D88E-6 S/N 14803-UP (For PC45MR-3/PC55MR-3)
S3D84-5X-AB S/N 00461-UP
S3D84-5X-AC S/N 00461-UP
S3D84E-5P-BA S/N 05382-UP
S4D84E-5P-BA S/N 00101-UP
Fit For Komatsu Skid Steer Loader: CK20-1 S/N F00003-Up
CK20-1 USA S/N F00003-Up
CK25-1 S/N F00003-Up
CK25-1 USA S/N F00003-Up
CK30-1 S/N A30001-UP
CK30-1 S/N F00003 AND UP
CK30-1 USA S/N F00003-Up
CK35-1 S/N A40001-UP
CK35-1 S/N F00003 AND UP
CK35-1 USA S/N F00003-Up
SK1020-5 S/N 37CF00004-Up
SK1020-5 turbo S/N 37CTF00003-Up
SK1020-5 turbo USA S/N 37CTF00003-Up
SK1020-5 USA S/N 37CF00004-Up
SK1020-5N S/N A70001-A70746
SK1020-5NA SN A60001-UP
SK1026-5 turbo S/N 37CTF50001-Up
SK1026-5 turbo USA S/N 37CTF50001-Up
SK1026-5N S/N A80001-A80531
SK510-5 S/N 37DF00001-Up
SK714-5 S/N 37AF01876-Up
SK714-5 S/N 37AFS0001-Up
SK714-5 S/N F04859 AND UP
SK714-5 USA S/N 37AF01876-Up
SK815-5 S/N 37BF00902-Up
SK815-5 TURBO S/N 37BTF00224-Up
SK815-5 turbo USA S/N 37BTF00224-Up
SK815-5 USA S/N 37BF00902-Up
SK815-5N S/N A30001-UP
SK815-5NA S/N A10001-UP
SK818-5 (USA VERSION) S/N 37BF50111-Up
SK818-5 S/N 37BF50111-Up
SK820-5 S/N 37BTF50112-Up
SK820-5 TURBO S/N F50600 AND UP
SK820-5 turbo USA VERSION S/N 37BTF50112-Up
SK820-5N S/N A40001-A40242
Fit For Komatsu Excavator: PC20MR-2 S/N F00003 AND UP
PC22MR-3 S/N F30001 AND UP
PC26MR-3 S/N F30003 AND UP
PC27MR-2 S/N F00103-Up
PC27R-8 S/N F32154-Up
PC30MR-2 S/N F00103-Up
PC30MR-3 S/N F30001 AND UP
PC35MR-2 S/N F00103-Up
PC35MR-3 S/N F30001 AND UP
PC35R-8 S/N F21701-Up
PC45MR-3 S/N F30003-
PC45R-8 S/N F22295-Up
PC50MR-2 S/N F00103 AND UP
PC55MR-3 S/N F30003 AND UP
1 Year Warranty
1 Year Warranty
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Fast Delivery
Fast Delivery
Estimated delivery time 3-6 workdays
No Core Charge
No Core Charge
We don't have a core charge for any products.
Frequently Asked Questions
Do you ship to Australia?
Yes, we ship Australia-wide with tracked international freight. All orders are carefully packaged to ensure parts arrive safely.
How long does shipping to Australia take?
Typically 5–10 business days depending on your location and the freight method selected at checkout.
Will I need to pay import duties or GST?
Goods with a customs value of AUD 1,000 or less are exempt from customs duty. For orders over AUD $1,000, GST and import duties may apply at the Australian border — buyers are responsible for any applicable charges upon delivery.
Are your parts compatible with Australian-spec machines?
Yes, most of our parts are internationally compatible. Please check the fitment details on each product listing to confirm compatibility with your specific machine.
Can I return a part if it doesn't fit?
Yes, we accept returns within 60 days of delivery for unused parts in original condition. Please contact our team to initiate a return.
What payment methods do you accept?
How do I find out the shipping cost for my order?
Shipping costs are calculated based on your location and the size of your order. To get an accurate shipping quote: add the part(s) to your cart, then enter your country, state, and zip code in the shipping estimator at the cart page — the shipping cost will be calculated instantly.
