1. Engine Rocker & Valve Covers Items
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  3. ISB 4CYL CUMMINS 4898648

ISB 170 4CYL CUMMINS 4898648 Diesel Valve Cover 3.9 4-CYLINDER

fits year: 2004.

4898648 Isb 170 4cyl Cummins 2004 3.9 4-cylinder Diesel Valve Cover

( Brand: Isb 170 4cyl Cummins ), ( Manufacturer Part Number: 4898648 ), ( Type: Valve Cover ), ( Color: Silver ), ( Items Included: As Pictured ), ( Material: Aluminum ), ( Country/region Of Manufacture: United Kingdom )

Review ISB 170 4CYL CUMMINS 3.9 4-cylinder Diesel Valve Cover fits 2004

ISB 170 4-Cylinder Cummins Valve Cover for 2004 3.9L 4-Cylinder Diesel Engine (Part Number: 4898648)

Description:

The ISB 170 valve cover is an essential component of the 2004 3.9L 4-cylinder Cummins diesel engine. Designed to house the engine's valves and maintain the proper sealing of the valvetrain, this valve cover plays a critical role in the engine's operation.

This particular valve cover, identified by part number 4898648, is engineered specifically for the ISB 170 4-cylinder Cummins engine. Its sleek design, made of durable materials, ensures a reliable and long-lasting performance.

The cover boasts a modern, streamlined appearance, with smooth lines and contours that complement the engine's overall aesthetic. The surface is finished with a high-quality coating that resists corrosion and wear, providing enhanced protection against the elements.

Inside the valve cover, you'll find a series of gasket surfaces that seal the valves and create a tight, efficient combustion chamber. The cover is also designed to accommodate the engine's various oil passages and drainback systems, ensuring optimal lubrication and cooling.

Additionally, the valve cover includes a breather system that permits the escape of excess crankcase pressure, helping to maintain proper engine vacuum levels. This system also prevents harmful contaminants, such as moisture and unburned fuel, from entering the crankcase.

The ISB 170 4-cylinder Cummins valve cover is an excellent choice for those seeking a high-performing, dependable replacement part for their diesel engine. Its precise fit, proven durability, and advanced design features make it an ideal solution for maintaining the optimal operation of your engine.

The ISB 170 4-cylinder Cummins engine, specifically the 2004 model with the 3.9 liter displacement and 489,8648 serial number, is a popular choice for those seeking a reliable and fuel-efficient diesel powertrain. However, like any engine, it comes with its own set of pros and cons.

Pros:

1. Fuel Efficiency: The ISB 170 4-cylinder Cummins engine is known for its impressive fuel efficiency. It delivers excellent mileage, making it a cost-effective option for those who log a lot of miles.

2. Durability: Cummins engines are renowned for their durability and longevity. The ISB 170 4-cylinder engine is no exception, with many units having clocked up hundreds of thousands of miles with minimal maintenance.

3. Torque: The 4-cylinder engine delivers a decent amount of torque, making it suitable for towing and hauling applications.

Cons:

1. Power: Compared to larger engines, the ISB 170 4-cylinder engine may not deliver as much power. This could be a drawback for those who require more horsepower for their applications.

2. Complexity: The ISB 170 4-cylinder engine can be more complex to maintain than larger engines due to its unique design and components. This could lead to higher maintenance costs over time.

3. Availability of Parts: Due to its age, some parts for the ISB 170 4-cylinder engine may be harder to find and more expensive.

Conclusion:

The ISB 170 4-cylinder Cummins engine offers impressive fuel efficiency, durability, and torque, making it a solid choice for those who prioritize these features. However, it may not deliver as much power as larger engines, and its complexity and potential availability of parts could lead to higher maintenance costs over time.

Recommendation:

If fuel efficiency and durability are your top priorities, and you're willing to accept slightly less power and the potential for higher maintenance costs, then the ISB 170 4-cylinder Cummins engine could be a good fit for you. However, if you require more power or are concerned about the complexity and availability of parts, you may want to consider a larger engine instead. Ultimately, the decision depends on your specific requirements and priorities.

Details:

ISB Cummins valve cover as pictured. Good used 2004 3.9 170 4 CYL. This was removed from a motor that came out of 2004 potato chip box truck.

part #: 4898648 prices

  • $85.00-$219.99

specifications rockercove:

  • for years: 2004
  • brand: Isb 170 4cyl Cummins
  • mpn: 4898648
  • type: Valve Cover
  • color: Silver
  • items included: As Pictured
  • material: Aluminum
  • country/region of manufacture: United Kingdom

payments rockercove:

  • wallet: Paypal
  • credit card: Discover
  • other

seller rockercove:

  • city: Paris, Arkansas
  • # reviews: 9582
  • rating: 100.0%

returns rockercove:

  • policy: No Returns

shipping rockercove:

  • transit: 3-10 Days
  • type: Calculated
  • class: Standard
  • carrier: USPS
  • cost: $18.70
  • service: USPS Ground Advantage

general rockercove:

  • Engines Engine Parts > Valvetrain Components > Rocker Valve Covers
  • condition: Used

offer rockercove:

  • started: August 25, 2025
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • quantity: 1
for years: 2004, type: valve cover, items included: as pictured, country/region of manufacture: united kingdom,
category: auto parts > engines engine parts > valvetrain components > rocker valve covers, color: silver, material: aluminum, sku: 8811991647763631,

Isb 170 4cyl Cummins 4898648 Is Similar To:

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  • (34.8% similar) New oem Cummins 3954996 / 3969481 - tier 3/6 .7 liter Isb/QB/cm engines,: : comparable with:: QSB5.9 CM850 QSB6.7 CM2850: m CM2250 Isb CM850...(August 9th, 2025)
  • (55.2% similar) It serves as a crucial component for the proper functioning of engines valve train system, ensuring optimal performance and durability. This valve cover is designed specifically for the Cummins Isb engine and carries OE/oem part number 4989994. The 2011 Cummins Isb engine valve cover is a genuine...(March 18th, 2026)
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2 offers $85.00–$219.99 USD
  • Offer #1: $85.00 price + $21.40 shipping estimate = $106.40* total. ISB Cummins valve cover as pictured. Good used 2004 3.9 170 4 CYL.+$21.40 shipping
  • Offer #2: $219.99 price + $55.05 shipping estimate = $275.04* total. Cummins ISB 170 Valve Cover 4 Cylinder Diesel Engine.+$55.05 shipping

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