1. Boat Outboard Engines To Buy
  2. sku: 24229782207163722
  3. EAST OUTBOARD MARINE 802446

EAST-OUTBOARD-MARINE 802446 Thermostat Mercrusier Sterndrive 160 Kit 120 140 2.5L 3.0L

fits year: 1971.

802446 East-outboard-marine 160 F 71 C Thermostat Kit For Mercrusier 120 140 2.5l 3.0l Sterndrive

( Brand: East-outboard-marine ), ( Manufacturer Part Number: 802446 ), ( Country Of Origin: China ), ( Type: Thermostat Kit ), ( Application / Fit: 120, 140, 2.5l, 3.0l )

Review EAST OUTBOARD MARINE 160 Thermostat Kit Mercrusier 120 140 2.5l 3.0l Sterndrive fits 1971

The **East Outboard Marine 802446 160/71 Thermostat Kit** is a precision-engineered solution designed exclusively for Mercury Marine s 120, 140, and 2.5L/3.0L sterndrive outboard engines, ensuring optimal cooling performance and engine longevity. This high-quality thermostat kit features a robust **71-degree thermostat** paired with a **160-degree bypass valve**, a pairing that strikes the perfect balance between efficient heat regulation and protection against overheating. The thermostat is crafted from durable, corrosion-resistant materials, including a high-grade elastomeric sealing ring and a precision-machined stainless steel housing, which guarantees reliable operation even in the harshest marine environments. The bypass valve, designed to open at 160 degrees Fahrenheit, prevents excessive heat buildup by allowing coolant to bypass the thermostat when necessary, reducing strain on the engine s cooling system. This kit is a direct-fit replacement, eliminating the need for modifications or adjustments, and is compatible with the original engine mounts and cooling passages, ensuring a seamless installation process. Whether you're preparing for a weekend fishing trip or a long-term cruising adventure, this thermostat kit provides the confidence of knowing your Mercury sterndrive is operating within its ideal temperature range, reducing the risk of overheating, premature wear, and costly repairs. Built to withstand the demands of saltwater corrosion and frequent temperature fluctuations, this kit is an essential upgrade for any boat owner seeking to maintain peak engine performance and extend the lifespan of their Mercury sterndrive.

### **Pros and Cons of buying a East Outboard Marine 802446 (160/71 Thermostat Kit for Mercruiser 120/140 2.5L/3.0L Sterndrive)**

#### **Pros:**

1. **Compatibility** This thermostat kit is specifically designed for Mercruiser 120 and 140 sterndrive engines with 2.5L and 3.0L displacements, ensuring a proper fit without modification.

2. **Performance Optimization** A properly functioning thermostat helps regulate engine temperature, preventing overheating and improving fuel efficiency, cooling system longevity, and overall engine performance.

3. **Prevents Cooling System Failures** A faulty thermostat can lead to coolant leaks, head gasket failure, or even engine damage. Replacing it as a preventive measure avoids costly repairs.

4. **Easy Installation** East Outboard Marine kits are known for being straightforward to install, often requiring minimal tools and no specialized expertise.

5. **Cost-Effective Solution** Compared to full cooling system overhauls or engine repairs caused by thermostat failure, this kit is a budget-friendly replacement option.

6. **Reliability** East Outboard Marine is a trusted brand in marine and outboard engine parts, offering durable components that meet industry standards.

7. **Prevents Coolant Contamination** A failing thermostat can allow coolant into the oil system, leading to sludge buildup and engine wear. Replacing it ensures clean coolant flow.

8. **Warranty Coverage** Some East Outboard Marine kits come with warranties, providing peace of mind against defects in materials or workmanship.

#### **Cons:**

1. **Limited Brand Flexibility** If you prefer a different brand (e.g., Mercruiser OEM, Seafoam, or aftermarket alternatives), you may miss out on potential long-term benefits or warranties tied to those brands.

2. **Potential Misinstallation Risk** If not installed correctly (e.g., improper sealing, incorrect orientation), the thermostat could fail prematurely or cause leaks.

3. **No Upgrade in Performance** This is a direct replacement part, not an upgraded version. If your engine has specific tuning needs, a standard thermostat may not provide additional benefits.

4. **Compatibility Doubts** While the kit is listed for Mercruiser 120/140 models, slight variations in engine modifications (e.g., turbocharged, aftermarket upgrades) could require verification before purchase.

5. **Cost Relative to OEM** While affordable, it may be slightly more expensive than generic aftermarket thermostats, though still cheaper than OEM replacements in some cases.

6. **Requires Draining Coolant** Installation typically requires draining the cooling system, which adds time and effort to the replacement process.

7. **No Additional Cooling System Additives** The kit does not include coolant flush or additive treatments, which may be recommended alongside thermostat replacement for optimal performance.

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### **Conclusion**

The **East Outboard Marine 802446 thermostat kit** is a **reliable, cost-effective, and easy-to-install solution** for Mercruiser 120/140 sterndrive owners with 2.5L or 3.0L engines. It addresses a critical component in the cooling system, preventing overheating and potential engine damage. The brand s reputation for quality and the kit s direct compatibility make it a **strong choice for maintenance or replacement**.

However, if you prioritize **brand loyalty** (e.g., using OEM parts) or have **specific engine modifications**, you may want to cross-reference with Mercruiser s official recommendations. For most DIYers or boat owners seeking a **practical, no-frills replacement**, this kit is an excellent option.

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### **Recommendation**

**Buy this thermostat kit if:**

- You need a **direct replacement** for a failing thermostat in a compatible Mercruiser sterndrive.

- You want a **trusted aftermarket brand** with good reviews for durability.

- You re performing **routine maintenance** to prevent cooling system failures.

- You re comfortable with **basic engine work** (coolant draining, thermostat removal/installation).

**Consider alternatives if:**

- You prefer **OEM parts** for warranty or exact specifications.

- Your engine has **unusual modifications** that might require verification.

- You re open to **bundled kits** that include coolant flush or additives for a more comprehensive service.

**Final Verdict:** **Highly recommended** for its balance of affordability, compatibility, and ease of use. Pair it with a **coolant flush** and **proper sealing** for the best results.

Details:

1 X Thermostat Housing Gasket 313416. 1 X Thermostat 982554. East Outboard Marine deal with, Suzuki, Mercury, OMC, Eventide, Mercrusier, Johnson Eventide OMC.

MerCrusier OEM. Up for 802446 160 F / 71 C Thermostat Kit MerCrusier 120 140 2.5L 3.0L Sterndrive. Package Contains the Following Components. More Detail fitment information: Fits the Following MerCrusier Marine Engines.

part #: 802446 price

  • $20.14

specifications ouboaen:

  • for years: 1971
  • brand: East-outboard-marine
  • mpn: 802446
  • country of origin: China
  • type: Thermostat Kit
  • application / fit: 120, 140, 2.5l, 3.0l

shipping ouboaen:

  • class: Standard
  • transit: 3-6 Days
  • type: Fixed
  • service: Standard
  • cost: $0.00

payments ouboaen:

  • other
  • credit card: Diners-club
  • wallet: Paypal

offer ouboaen:

  • best offers: True
  • sold: 0
  • options: Ship-to-home
  • quantity: 8
  • started: May 28, 2026
  • availability: In Stock

general ouboaen:

  • Boat Parts > Outboard Engines Components > Cooling Systems
  • condition: New

seller ouboaen:

  • rating: 99.6%
  • # reviews: 1314
  • city: Hebron, Kentucky

returns ouboaen:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
for years: 1971, country of origin: china, type: thermostat kit, application / fit: 120, 140, 2.5l, 3.0l,
category: boat parts > outboard engines components > cooling systems, sku: 24229782207163722,
East-outboard-marine 802446 Is Similar To:
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1 offer $20.14 USD
  • New. Offer #1 priced at $20.14 + $0.00 shipping estimate = $20.14* total. 120 140 2.5L 3.0L. 1 X Thermostat 982554.FREE SHIPPING

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