Heavy Equipment Parts Online | Excavator, Dozer, Loader & Forklift Parts | ESIKS
Quick OrderParts Quote
Quick OrderParts Quote
All Brands All Equipment Must Buy PRO Program About Esiks

Contact Info
  • Address: LG 1/F, HKPC Building, Hong Kong
  • Phone: +1(571) 575 7316
  • Email: [email protected]
  • Hours: Mon - Fri 9:00 - 18:00
About Us
  • About Us
  • Contact
  • Parts Quote
  • Become Dealer
Customer Service
  • FAQ
  • Shipping
  • Payment
Policies
  • Returns
  • Privacy
  • Terms
Brand Character
Our Partners
DHL UPS FedEx USPS
Payment Methods
Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods
Follow Us
F Y T
© 2016– ESIKS All Rights Reserved | Privacy Policy | Terms & Conditions | Cookie Settings
Home / Oxygen Sensor / Oxygen O2 Sensor 8M2003959 for Mercury Mercruiser 5.0 5.7 8.1 8.2 4.5 4.3 350 MAG
Product Image
Click to view full image

Oxygen O2 Sensor 8M2003959 for Mercury Mercruiser 5.0 5.7 8.1 8.2 4.5 4.3 350 MAG

0.0(0 Reviews)Add Your Review
$69.99

PRO Program members can receive tiered savings on this line—up to 20% more off for qualifying accounts.

Shipping estimate & delivery timing

SKU: ESY39699
In Stock
🎁

Share & Save!

Share this product on social media and get an exclusive discount code!

Click any platform below to share this product. After sharing, you'll receive a discount code!

Trusted by Parts Buyers Worldwide

Built to support repair shops, fleets, and equipment owners with dependable parts sourcing and responsive service.

1-Year Parts Warranty

Qualifying new parts include 1-year coverage. Review the Warranty Policy section for coverage details, claim steps, and exclusions.

90-Day Return Window

Eligible orders may qualify for returns within 90 days. See the Easy Return Policy section for conditions and next steps.

Responsive Parts Support

Send a question through Ask a Product Question or the contact form. Our team reviews requests on business days and follows up as quickly as possible.

Oxygen O2 Sensor 8M2003959 for Mercury Mercruiser 5.0 5.7 8.1 8.2 4.5 4.3 350 MAGReplace Part Number:Mercruiser 8M2003959, 710-8M2003959, 7108M2003959, Volvo Penta 3883724Application:Fit for Following Models:8.1L INBOARD EC-8.1L INBOARD (Base) EC540 HP-5408.2 MAG HO EC-8.2L Mag EC (Base Model)5.0L, 350, 377 MAG MPI STERNDRIVE EC-377 MAG MPI BRAVO EC5.7L MPI SKI EC-5.7L SKI EC5.0, 350, 377 MAG MPI STERNDRIVE EC-350 MAG MPI HORIZON ALPHA, BRAVO EC8.2 HO EC-8.2L INBOARD (BASE) ECVAZER 100 EC-100 VAZER EC4.3L MPI ALPHA, BRAVO EC-4.3L MPI ALPHA, BRAVO EC8.2 HORIZON, 8.2 HO EC-8.2L INBOARD (H.O.) ECSCORPION 350 EC, 377 HO EC-SCORPION 377 HO EC5.0L, 350, 377 MAG MPI STERNDRIVE EC-350 MAG MPI ALPHA, BRAVO EC5.7, 6.2L MPI INBOARD EC-6.2L MPI MIE EC4.5L MPI ALPHA, BRAVO-4.5L MPI 250 Alpha, Bravo EC5.0, 350, 377 MAG MPI STERNDRIVE EC-377 MAG MPI BRAVO EC3.0L MPI EC-3.0L MPI EC5.7, 6.2L MPI INBOARD EC-5.7L MPI MIE EC8.2 MAG, 8.2 MAG HO EC-8.2L Mag EC (Base Model)8.2L MAG, 8.2L MAG HO-8.2L Mag (Base Model)8.2 HO EC-8.2L INBOARD (H.O.) EC5.0L, 350, 377 MAG MPI STERNDRIVE EC-350 MAG MPI HORIZON ALPHA, BRAVO EC5.0, 350, 377 MAG MPI STERNDRIVE EC-5.0L MPI ALPHA, BRAVO EC8.2 MAG HO EC-8.2L Mag EC (H.O. Model)8.2 MAG, 8.2 MAG HO EC-8.2L Mag EC (H.O. Model)5.0L, 350, 377 MAG MPI STERNDRIVE EC-5.0L MPI ALPHA, BRAVO EC8.1L INBOARD EC-8.1L INBOARD (H.O.) ECSCORPION 350 EC, 377 HO EC-SCORPION 350 EC520 HP-5208.2L MAG, 8.2L MAG HO-8.2L Mag (H.O. Model)496 MAG STERNDRIVE EC-496 MAG EC (H.O. Model)8.2 HORIZON, 8.2 HO EC-8.2L INBOARD (Base) EC496 MAG STERNDRIVE EC-496 MAG EC (Base Model)

Product Questions & Answers (0)

Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for Oxygen O2 Sensor 8M2003959 for Mercury Mercruiser 5.0 5.7 8.1 8.2 4.5 4.3 350 MAG (SKU: ESY39699).

No product questions yet. Ask us using the product question form.

Ask a Product Question

Ask a Product Question

Send us your product question and we'll reply by email.

Warranty Policy

Every new aftermarket part from us includes a 1-year warranty. Full terms, coverage, and how to make a claim: Warranty Assistance.

Shipping Policy

We ship to customers around the world. Orders are sent with our standard courier service—trackable, dependable, and easy to work with. On this product page, use Get Estimate under the price to see shipping cost and estimated delivery for your location. For destinations, rules, and full details, read our Shipping Policy Details.

Easy Return Policy

We want you to be confident in your order. If you are not satisfied, you may qualify for a return or refund within 90 days, subject to conditions. See our Easy Return Policy for eligibility, steps, and exceptions.