Mercury Optimax 3.0L V6 Crankshaft | OEM 8M0142417 | Fits 2006 & Up Mercury 200HP 225HP 250HP 300HP DFI Outboards

Product Overview

Restore the performance and reliability of your Mercury outboard with this genuine OEM Mercury 3.0L V6 Optimax Crankshaft, designed for 2006 and newer Mercury 200HP, 225HP, 250HP, and 300HP DFI Optimax outboard engines. Manufactured to Mercury's exact specifications, this crankshaft provides the strength, balance, and durability required for dependable engine performance. This crankshaft has been professionally cleaned, polished, and inspected to ensure it is in good reusable condition. Removed from a freshwater donor powerhead (Serial #3B137843), it shows no visible damage or wear that would affect installation or normal operation. Ready for installation, it is an excellent replacement for a worn or damaged crankshaft.

---

Key Features

• Genuine OEM Mercury Optimax Crankshaft
• Fits 3.0L V6 DFI Optimax engines
• Professionally cleaned and polished
• Thoroughly inspected for wear and damage
• Removed from a freshwater donor engine
• No visible damage affecting performance
• Ready to install
• Ideal replacement for damaged or worn crankshafts

---

Technical Specifications

Specification	Details
Brand	Mercury
Product Type	Crankshaft
OEM Part Number	8M0142417
Engine Type	3.0L V6 DFI Optimax 2-Stroke
Horsepower	200 HP, 225 HP, 250 HP, 300 HP
Model Years	2006 & Up
Condition	Professionally Inspected Used

---

OEM Part Numbers

• 8M0142417

---

Compatible Applications

Designed for select Mercury outboards including: Model Years

• 2006 & Up

Horsepower

• 200 HP
• 225 HP
• 250 HP
• 300 HP

Engine Type

• Mercury 3.0L V6
• DFI Optimax
• 2-Stroke

Important: This crankshaft is designed only for 3.0L V6 DFI Optimax engines. It does not fit carbureted or non-DFI EFI 3.0L Mercury outboards. Always verify your OEM part number and engine serial number before purchasing.

---

Condition

This Mercury crankshaft has been professionally inspected and prepared for reuse. Inspection highlights include:

• Removed from a freshwater donor powerhead (Serial #3B137843)
• Professionally cleaned and polished
• Carefully inspected for cracks, scoring, and excessive wear
• No visible damage affecting installation or performance
• Ready for installation

---

What's Included

Your purchase includes:

• OEM Mercury 3.0L V6 Optimax Crankshaft

Only the components shown in the product photos are included.

---

Shipping Information

Your crankshaft will be carefully packaged to help prevent shipping damage during transit. We offer fast shipping throughout the United States, with international shipping available upon request. For an accurate shipping quote, please provide:

• Country
• ZIP or Postal Code
• Residential or Commercial Address
• Whether liftgate service is required

---

Why Buy from EZ Boats Marine?

• Genuine OEM Mercury Marine Parts
• Professionally Cleaned & Inspected Components
• Freshwater Marine Parts
• Fast Nationwide & International Shipping
• Secure Packaging
• Experienced Marine Parts Specialists
• Honest Condition Descriptions
• Dedicated Customer Support

At EZ Boats Marine, every crankshaft is individually cleaned, polished, and inspected before being offered for sale. We take pride in providing quality OEM components that meet the expectations of serious boat owners and marine technicians.

---

Frequently Asked Questions

Is this a genuine Mercury crankshaft?

Yes. This is an original OEM Mercury crankshaft manufactured for Mercury 3.0L V6 Optimax outboards.

Has the crankshaft been inspected?

Yes. It has been professionally cleaned, polished, and inspected to ensure there is no visible damage or excessive wear that would affect installation or service.

What engines does it fit?

This crankshaft fits select 2006 and newer Mercury 3.0L V6 Optimax DFI 2-Stroke outboards in 200HP, 225HP, 250HP, and 300HP applications.

Will it fit a carbureted or EFI 3.0L Mercury?

No. This crankshaft is specifically designed for 3.0L DFI Optimax engines and is not compatible with carbureted or non-DFI EFI 3.0L models.

Can EZ Boats Marine verify fitment?

Absolutely. Send us your Mercury engine's model and serial number, and we'll gladly confirm compatibility before you purchase.