1. Boat Outboard Engines To Buy
  2. sku: 24293833294659751
  3. VOLVO PENTA 3868895

VOLVO PENTA 3868895 Upper Unit 1.97 1.79 1.89 2.18

fits model: Sx. make: Volvo. year: 1990.

3868895 Volvo Penta Sx-m 1.97 Upper Unit Fits 1.79 1.89 2.18 90 Day Warranty

( Brand: Volvo Penta ), ( Manufacturer Part Number: 3868895 ), ( Part Type: Unit ), ( Warranty: 90 Day ), ( Country Of Origin: Sweden )

Review VOLVO PENTA Sx m 1.97 Upper Unit 1.79 1.89 2.18 Day Warranty fits SX 1990

The **Volvo Penta 3868895 SX-M 1.97 Upper Unit** is a high-performance marine propulsion solution engineered for demanding applications, combining reliability, efficiency, and cutting-edge technology to deliver exceptional performance in both recreational and commercial boating environments. Part of Volvo Penta s renowned **SX-M series**, this upper unit is designed to integrate seamlessly with a variety of inboard engines, offering a versatile and robust drivetrain solution for vessels ranging from mid-sized cruisers to performance-oriented workboats. With a **1.97-inch (49.9 mm) propeller shaft diameter**, this unit is optimized for medium to high-power applications, ensuring smooth power transmission while minimizing wear and tear on critical components.

The **SX-M series** is renowned for its **compact yet durable design**, featuring a **steel housing** reinforced with high-strength materials to withstand the stresses of heavy-duty operation, including frequent starts, stops, and high-load conditions. The **1.79-inch (45.5 mm) and 1.89-inch (47.9 mm) shaft options** provide flexibility for different engine configurations, allowing for precise matching with Volvo Penta s inboard powerplants, while the **2.18-inch (55.4 mm) option** caters to larger, high-torque applications where additional strength is required. The **90-degree angle** of the upper unit is a key feature, enabling efficient power transfer while maintaining a compact footprint ideal for vessels with limited space or those requiring a lower center of gravity for enhanced stability.

One of the standout attributes of this upper unit is its **advanced sealing system**, which incorporates **dual-lip shaft seals** and **labyrinth designs** to prevent water ingress and ensure long-term reliability. The **SX-M series** also features **Volvo Penta s proprietary SX-M bearing system**, which utilizes **high-capacity roller bearings** and **optimized lubrication pathways** to reduce friction and extend service intervals. This design not only improves efficiency but also minimizes the risk of premature wear, making it a preferred choice for operators who demand durability without compromising performance.

For ease of maintenance and serviceability, the **3868895 SX-M** is equipped with **quick-release components**, including a **modular gearbox design** that allows for rapid inspection and replacement of internal parts. The unit s **integrated oil cooling system** ensures consistent lubrication under high loads, while the **compact gear ratio options** (depending on the specific model variant) provide flexibility for matching torque requirements with varying propeller sizes. Whether paired with a **Volvo Penta D6, D12, or other high-performance inboard engines**, this upper unit delivers **superior torque multiplication**, enabling smoother acceleration and better control at both low and high speeds.

Additionally, the **SX-M series** incorporates **Volvo Penta s advanced electronic control systems**, allowing for seamless integration with modern boat management platforms. Features such as **remote monitoring, diagnostic capabilities, and adaptive shift control** enhance operator convenience while improving fuel efficiency and reducing operational costs. The **robust yet lightweight construction** of the upper unit also contributes to an overall reduction in fuel consumption, as the optimized power transfer minimizes energy loss during operation.

Ideal for **fishing vessels, patrol boats, offshore yachts, and commercial workboats**, the **Volvo Penta 3868895 SX-M 1.97 Upper Unit** represents a premium choice for those seeking a **high-performance, long-lasting drivetrain solution**. Its **versatile shaft options, reinforced housing, and advanced sealing technology** make it a reliable workhorse in demanding marine environments, ensuring consistent power delivery and minimal downtime. Whether in saltwater or freshwater applications, this upper unit exemplifies Volvo Penta s commitment to **innovation, durability, and performance**, making it a top-tier selection for serious boaters and fleet operators alike.

### **Pros and Cons of Buying a Volvo Penta 3868895 SX-M (1.97 Upper Unit) with Various Gear Ratios (1.79, 1.89, 2.18, 90)**

#### **Overview**

The **Volvo Penta 3868895 SX-M** is a **1.97-liter, 4-cylinder, inboard/outboard (I/O) engine** designed for medium-sized boats, offering a balance of power, efficiency, and reliability. This model is part of Volvo Penta s **SX series**, known for its **direct injection, turbocharging, and electronic fuel injection (EFI)**. The **gear ratios (1.79, 1.89, 2.18, and 90)** refer to the **propeller shaft ratios**, which affect speed, torque, and fuel efficiency.

---

### **Pros**

1. **Proven Reliability & Durability**

- Volvo Penta engines are well-regarded for their **long service life**, especially in marine applications where corrosion resistance is critical.

- The **SX series** is known for **fewer mechanical failures** compared to some competitors, particularly in **turbocharged diesel engines**.

- Many owners report **minimal issues** if properly maintained, with some units lasting **20,000 hours** with regular servicing.

2. **Good Power-to-Weight Ratio**

- At **1.97L**, this engine provides **decent horsepower (around 60-80 HP depending on tuning and load)**, making it suitable for **medium-sized boats (20-30 ft)**.

- The **turbocharger** ensures **strong low-end torque**, which is beneficial for **fishing, cruising, and towing**.

3. **Fuel Efficiency**

- Diesel engines like this one are **more fuel-efficient** than gasoline counterparts, especially at **cruising speeds**.

- The **direct injection system** helps optimize fuel consumption, reducing operating costs over time.

4. **Electronic Fuel Injection (EFI) & Modern Controls**

- Unlike older carbureted or mechanical injection systems, **EFI provides better fuel atomization and engine response**.

- Some models feature **electronic throttle control**, allowing for **smoother power delivery** and easier tuning.

5. **Corrosion Resistance**

- Volvo Penta engines are built with **marine-grade materials**, including **stainless steel components and corrosion-resistant coatings**.

- The **sealed design** reduces the risk of **water ingress**, which is common in older marine engines.

6. **Aftermarket & Support Availability**

- Volvo Penta has a **strong aftermarket support network**, with **OEM parts, remanufactured units, and dealership service centers**.

- **Tuning options** (e.g., **Turbocharger upgrades, exhaust modifications**) are available to improve performance if needed.

7. **Lower Operating Costs (Compared to Gasoline)**

- Diesel fuel is **cheaper per gallon** than gasoline, and the engine s efficiency means **longer run times between refuels**.

- **Less frequent oil changes** (typically every **200-300 hours**) compared to gasoline engines.

8. **Smooth Operation & Low Vibration**

- The **balanced 4-cylinder design** reduces **engine vibration**, making it **quieter and more comfortable** for passengers.

- **Turbo lag is minimal** in this engine, providing **responsive power delivery**.

9. **Resale Value & Longevity**

- Volvo Penta engines **retain value well** compared to some brands, especially if well-maintained.

- Many **older SX models** are still in service today, indicating **durability over time**.

10. **Versatility in Applications**

- Works well in **cruising boats, fishing vessels, and even small workboats**.

- Can be paired with **different propellers and gear ratios** to optimize performance for **speed, towing, or fuel economy**.

---

### **Cons**

1. **Higher Initial Cost (Compared to Some Alternatives)**

- **New or remanufactured Volvo Penta engines** can be **more expensive** than **Mercury, Yamaha, or even some older Suzuki diesels**.

- **Labor costs for repairs** may also be higher than at independent marine shops.

2. **Complexity & Maintenance Requirements**

- **Turbocharged diesel engines require more attention** than naturally aspirated gasoline engines.

- **Oil changes must be done on schedule** (usually **every 200-300 hours**), and **fuel filters should be checked regularly** to prevent clogging.

- **Coolant system maintenance** is critical **corrosion and overheating** can be issues if neglected.

3. **Sensitivity to Fuel Quality**

- **Diesel engines are prone to clogging** if **low-quality or contaminated fuel** is used.

- **Water in the fuel system** can cause **pumping issues or injector failures**, requiring **fuel polishing or filter changes**.

4. **Limited High-Speed Performance**

- While strong at **cruising speeds**, this engine **does not excel at high RPMs** like some **high-revving gasoline outboards**.

- **Top-end speed is moderate**, making it less ideal for **high-performance racing or planing boats**.

5. **Gear Ratio Limitations**

- The **fixed gear ratios (1.79, 1.89, 2.18, 90)** may not be optimal for **every boat setup**.

- **1.79 & 1.89** Better for **fuel efficiency, towing, and low-speed performance**.

- **2.18 & 90** Better for **higher speeds but may sacrifice torque**.

- **Mismatched ratios** can lead to **poor acceleration, excessive RPMs, or fuel waste**.

6. **Potential Turbocharger Issues**

- **Turbochargers can fail** if **oil is not changed regularly** or if **exhaust restrictions** (e.g., clogged filters) occur.

- **Wastegate leaks or turbo lag** can develop over time, requiring **repairs or replacements**.

7. **Electronic Control System Dependence**

- **EFI systems can fail** if **voltage fluctuations** or **sensor issues** arise.

- **Diagnostic trouble codes (DTCs)** may require **specialized tools** to troubleshoot, increasing repair costs.

8. **Limited Availability of Parts (For Older Models)**

- While **common, some older SX models may have discontinued parts**, requiring **remanufactured or aftermarket components**.

- **Dealership support may be limited** for very old units, forcing reliance on **specialized marine mechanics**.

9. **Noise & Heat Output**

- **Diesel engines are inherently louder** than gasoline outboards, which can be **annoying in quiet cruising scenarios**.

- **Cooling system demands** are higher, requiring **proper radiator and water flow management**.

10. **Not Ideal for Extreme Conditions**

- **Cold weather starts** can be **difficult** without proper **block heaters or fuel additives**.

- **Saltwater corrosion** (if not properly maintained) can **weaken internal components** over time.

---

### **Key Considerations Before Purchase**

1. **Check Maintenance Records**

- Ensure the engine has **regular oil changes, fuel system servicing, and turbo inspections**.

- Look for **signs of corrosion, leaks, or unusual noise** during inspection.

2. **Verify Gear Ratio Suitability**

- The **propeller shaft ratio** must match your **boat s intended use**:

- **Lower ratios (1.79, 1.89)** Better for **fishing, towing, and fuel efficiency**.

- **Higher ratios (2.18, 90)** Better for **speed but may struggle with torque**.

- If unsure, **consult a marine mechanic** to ensure proper matching.

3. **Test the Engine Before Buying**

- Run the engine at **different RPMs** to check for:

- **Smooth operation** (no knocking, rough idling).

- **Proper turbo response** (no excessive lag).

- **No unusual noises** (whining, rattling, or knocking).

- **Check exhaust for black smoke** (indicates rich fuel mix) or **white smoke** (possible coolant leak).

4. **Inspect Cooling & Fuel Systems**

- **Coolant should be clean, not milky (indicating oil contamination).**

- **Fuel filters should be clean**, and **fuel lines should have no leaks**.

- **Water pump and impeller** should be intact (critical for cooling).

5. **Consider Remanufacturing vs. New**

- A **remanufactured Volvo Penta SX-M** (with **full rebuild and warranty**) can be a **cost-effective alternative** to a new engine.

- **New engines** come with **full warranties** but at a higher upfront cost.

6. **Budget for Potential Upgrades**

- If the engine is **older**, consider **budgeting for:**

- **Turbocharger upgrade** (for better performance).

- **Exhaust system modifications** (

Details:

Could use a paint job. Compatible with: SX-M, SX-S Cobra, SX-C, SX-C1, SX-C2, and DP-SM 2.11, 2.32. Internal gears 21:26. Drained oil/lube.

This Upper Unit gear case came from a Volvo Penta SX-M 1.97 ratio out drive. Upper unit was tested on Out drive before disassembly Ran both ways, forward, reverse and neutral, turns smoothly as it should, nothing unusual noticed. U-joint/yoke and shaft good. Exact replacement for all SX Out drives stamped with 1.79, 1.89, 1.97, 2.18.

Missing the plastic Cover that has Volvo Penta SX Decal/sticker, as you can see in pictures its not there. Oil was dark brown, no water or metal shavings. Need the complete out drive or more parts. Paint is chipping off/fading falling off pretty bad on one side and the rear, below shiftier area.

Ships to Canada. Any questions at all, we'll get back to you right away. The item is shown and as described in excellent condition. With lowest fees.

part #: 3868895 prices

  • $600.00-$2395.00

specifications ouboaen:

  • for models: Sx
  • for makes: Volvo
  • for years: 1990
  • brand: Volvo Penta
  • mpn: 3868895
  • part type: Unit
  • warranty: 90 Day
  • country of origin: Sweden

offer ouboaen:

  • sold: 0
  • quantity: 1
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • started: May 30, 2026

shipping ouboaen:

  • service: UPS Ground
  • type: Fixed
  • cost: $88.00
  • class: Standard
  • transit: 5-10 Days
  • carrier: UPS

returns ouboaen:

  • time: 60 Days
  • policy: Returns Accepted
  • paid by: Buyer

general ouboaen:

  • condition: Used
  • Boat Parts > Outboard Engines Components > Other

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seller ouboaen:

  • rating: 100.0%
  • city: Cape Coral, Florida
  • # reviews: 593
for models: sx, for makes: volvo, for years: 1990, part type: unit, warranty: 90 day, country of origin: sweden,
category: boat parts > outboard engines components, sku: 24293833294659751,
Volvo Penta 3868895 Is Similar To:
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5 offers $600.00–$2395.00 USD
  • Used. Offer #1 priced at $600.00 + $90.00 shipping estimate = $690.00* total. All gears are turning as should. Used and working upper.+$90.00 shipping
  • Used. Offer #2 priced at $2395.00 + $250.00 shipping estimate = $2645.00* total. Outdrive will fit all of the Volvo Penta Cobra SX 3.0L, 4.3L models along with basically any of the Volvo Penta Cobra outdrive from this era. PART - 2000 Volvo Penta Cobra SX-M 3.0L 4cyl sterndrive complete 1.97 outdrive assembly, Volvo Penta part # .+$250.00 shipping
  • Used. Offer #3 priced at $1400.00 + $113.78 shipping estimate = $1513.78* total. 3 6 0 6225566 Volvo upper gearcase off of a catalyzed Volvo Penta engine.+$113.78 shipping
  • Used. Offer #4 priced at $999.00 + $59.00 shipping estimate = $1058.00* total. +$59.00 shipping
  • Used. Offer #5 priced at $399.95 + $88.00 shipping estimate = $487.95* total. Upper unit was tested on Outdrive before disassembly Ran both ways, on both forward, reverse and neutral, unit turns smoothly as it should, nothing unusual noticed. Missing the plastic Cover that has the Volvo Penta SX Decal/sticker, as you can see in pictures its not there.+$88.00 shipping

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