Alternator 150A/180A – Fits Volvo Penta D3 Series (Replaces 31419556, 30667118, 30659131)
Alternator 150A/180A – Fits Volvo Penta D3 Series (Replaces 31419556, 30667118, 30659131) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Alternator 150A/180A – Fits Volvo Penta D3 Series (Replaces 3141955...
Product Details
This is an aftermarket Alternator 150A/180A for Volvo Penta D3 Series engines, including models from 110 HP to 220 HP (2.4L, 5-cylinder) manufactured from 2005 to the present. It serves as a high-quality replacement to restore your engine's charging system to full functionality.
It directly interchanges with Volvo Penta part numbers 31419556, 30667118, and 30659131, as well as WAI 23976N.
- Designed for engine-mounted installation.
- Features a 5-groove serpentine pulley for reliable belt grip.
- Provides a 12V, 150A electrical output consistent with OEM specifications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 31419556 |
| Volvo Penta | 30667118/31419556 |
| Volvo Penta | 30659131/31419556 |
| WAI | 23976N |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This alternator fits the following Volvo Penta D3 series engines for both inboard ('I' models) and sterndrive ('A' models) applications.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | D3-110I-D | 110 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-110I-E | 110 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-110I-F | 110 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-110I-G | 110 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-110I-H | 110 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140A-D | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140A-E | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140A-F | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140A-G | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140A-H | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140I-D | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140I-E | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140I-F | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140I-G | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-140I-H | 140 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-150I-D | 150 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-150I-E | 150 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-150I-F | 150 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-150I-G | 150 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-150I-H | 150 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170A-D | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170A-E | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170A-F | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170A-G | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170A-H | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170I-D | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170I-E | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170I-F | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170I-G | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-170I-H | 170 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200A-D | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200A-E | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200A-F | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200A-G | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200A-H | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200I-D | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200I-E | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200I-F | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200I-G | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-200I-H | 200 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220A-D | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220A-E | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220A-F | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220A-G | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220A-H | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220I-D | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220I-E | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220I-F | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220I-G | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
| Volvo Penta | D3-220I-H | 220 | 4-Stroke | 2005–present | 31419556 | Diesel |
Technical Specs
- Product Type
- Alternator
- Installation
- Engine-mounted
- Electrical Output
- 150A
- Voltage
- 12V
- Dimensions
- Height: 28.0 cm; Width: 25.0 cm; Length: 25.5 cm
- Weight
- 3.5 kg (7.72 lbs)
- Rotation
- Clockwise (CW)
- Regulator Type
- IR (Integrated Regulator)
- Pulley Type
- 5-groove multi-ribbed serpentine
- Pulley Diameter
- 54mm (2.13 in)
- B+ Connection
- M8 stud
- Mounting Bracket Distance
- 92mm (3.62 in)
- Belt Adj. Bracket Hole
- 10.5mm
- Pulley Distance
- 61mm
- Width/Holder Arm
- 32mm
- Bracket Hole
- 9mm x 18mm
What’s in the Box
- 1 x Alternator (31419556)
Installation Notes
- Disconnect the battery's negative terminal to prevent electrical shorts.
- Loosen the serpentine belt tensioner and remove the belt from the alternator pulley.
- Carefully unplug the electrical connectors and detach the main B+ terminal wire from the old alternator.
- Remove the mounting bolts securing the alternator to the engine bracket and lift it out.
- Install the new alternator, ensuring it aligns correctly with the mounting brackets. Secure it with the bolts.
- Reconnect the electrical connectors and the B+ terminal wire.
- Reinstall the serpentine belt and apply the correct tension as per your engine's service manual.
- Reconnect the battery's negative terminal.
- Start the engine and verify that the charging system is operating correctly (e.g., check voltage at the battery).
Troubleshooting & FAQ
How do I know if my alternator is failing?
Common signs include a weak or dead battery, dimming headlights and interior lights, a "Check Battery" or "ALT" warning light on your dashboard, and a whining or grinding noise coming from the engine bay.
What is the difference between the 150A and 180A ratings?
While some aftermarket sources list 180A, OEM documentation for the D3 series specifies a 150A alternator. This unit is built to the 150A OEM standard, which is sufficient for the factory-equipped electrical load. Using a higher-amperage alternator is generally not necessary unless you have added significant high-draw electronics.
Is this a direct fit for all Volvo Penta D3 engine models?
Yes, this alternator is designed to fit the entire D3 series from 2005 to present, covering all horsepower ratings and both inboard ('I') and sterndrive ('A') configurations. Always compare the pictures and specifications to your old part before ordering.
What should the correct belt tension be?
Proper belt tension is critical. It should not be too tight or too loose. Refer to your Volvo Penta D3 service manual for the exact tension specifications and adjustment procedure, as over-tensioning can damage the alternator bearings.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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