Nissan Altima 2.5 Engine Common Problems

Nissan Altima 2.5 Engine Common Problems & Preventative Maintenance Practices

The Nissan 2.5L, model QR25DE engine has been around for 22 years as it was initially introduced in 2001. While it is known as a dependable, powerful engine, like most other engines on the market, it is not without the occasional performance issues. Thankfully, these engine glitches are easily discovered and can be repaired before they cause irreparable damage. Engine retailers like reman-engine.com have seen these problems over and over again.

Upgrades Made to Enhance Performance:

Nissan Altima 2.5 Engine Common Problems
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Genuine Nissan Engine Oil Change Kit 0W-20 Filter & Washer OE
  • Genuine Nissan 0W-20 Oil Change Kit
  • Qty. 5 Quarts of Genuine Nissan Motor Oil 0W-20
  • Includes Genuine Nissan Oil Filter 15208-65F0E (Small Nissan Filter)
  • Includes Copper Washer 11026-JA00A
  • Manufactured By ExxonMobil Oil Corporation
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NEW Genuine OEM Engine Oil Filter 15208-65F0E + Drain Plug 4STEED MOTORS 11026-JA00A Fit For Nissan / Infiniti
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  • Do you want to avoid damage to your vehicle's engine? Replacing the oil filter is even more important than changing the air or fuel filter. This OEM filter will protect your vehicle by keeping harmful particles and dirt out, preventing premature wear and engine failure.
  • As for the DRAIN PLUG CRUSH WASHER GASKET many people take it for granted that aluminum and copper do not need to be replaced. However, they do "harden". Yes, you may be able to reuse the old one 1 or 2 times, but every time you reuse it, you are increasing the chances of a leak. Really, it's a small price to pay to do the job correctly and reduces the risk of oil leaks. If your mechanic confirms the failures of these parts you should replace them INSTANTLY to avoid downtime for your car.
  • 🔵 FEATURES:【ENGINE OIL FILTER】: ORIGINAL part made with a unique blend of natural and synthetic materials in the media for better oil filtration and enhanced engine protection.【DRAIN PLUG CRUSH WASHER GASKET:】: High quality and durable part made of aluminum, fixed same as OEM.
  • 📦 PACKAGE INCLUDES: 3 x 3 x 3 inches package with ONE (1) engine oil filter and ONE (1) drain.
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  • Package Weight :5.0Lbs
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  • Qty. 5 Quarts of Genuine Nissan Motor Oil 5W-30
  • Includes Genuine Nissan Oil Filter 15208-65F0E (Small Nissan Filter)
  • Includes Copper Washer 11026-JA00A
  • Manufactured By ExxonMobil Oil Corporation
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Engine Oil Cooler Gasket Set Compatible for 2007 to 2013 Altima Sentra Rogue with 2.5L 4 Cylinder Engine (Metal Gasket + Oring seal)
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  • If your oil Cooler leak all you need is this kit to fix the issue. Does notHave to change the Oil Cooler Save hundreds of Dollers by changing just this 2 Gaskets
  • Kit Includes Part Numbers: 21304-JA00A (Block Gasket) and 21304-JA06A (Upper Housing Gasket)
  • Fits 2007-2013 Nissan Altima 4 Cyl 2.5L, 2007-2011 Nissan Sentra SE-R, Spec V - 4 Cyl 2.5L, 2008-2018 Nissan Rouge 4 Cyl 2.5L, 2007-2014 Nissan X-trail 4 Cyl 2.5L
  • Manufactured to Meet and or Exceed Oem Quality and Standereds OEM Nissan Part # for Reference 21304-JA06A & 21304-JA00A
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Engine Oil Cooler with Bracket, Gasket And Oil Filter Compatible for 2007-2013 Nissan Altima 2.5L Base S SL Hybrid for Nissan Sentra SE-R, Spec V 21300-JA06A 21304-JA00A
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  • Gasket in between Oil Cooler and Bracket already installed. After Market Part. Instruction is not included. Professional installation is recommended
  • Please Check The Part/OEM number in the description Below to ensure you will get the right products. Reference OE/OEM Number: 21300-JA05A, 21300-JG36A, 21300-JA06A, 21304-JA00A, 21300JA05A, 21300JG36A, 21300JA06A, 21304JA00A
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  • ☑️ TOP QUALITY/ GUARANTEED
  • Do you want to avoid damage to your vehicle's engine? Replacing the oil filter is even more important than changing the air or fuel filter. This OEM filter will protect your vehicle by keeping harmful particles and dirt out, preventing premature wear and engine failure.
  • As for the drain plug crush washer gasket:, many people take it for granted that aluminum and copper do not need to be replaced. However, they do "harden". Yes, you may be able to reuse the old one 1 or 2 times, but every time you reuse it, you are increasing the chances of a leak. Really, it's a small price to pay to do the job correctly and reduces the risk of oil leaks. If your mechanic confirms the failures of these parts you should replace them INSTANTLY to avoid downtime for your car.
  • 🔵 FEATURES:【OIL FILTER】: ORIGINAL part made with a unique blend of natural and synthetic materials in the media for better oil filtration and enhanced engine protection.【DRAIN PLUG CRUSH WASHER GASKET:】: High quality and durable part made of aluminum, fixed same as OEM.
  • 📦 PACKAGE INCLUDES: 8 x 3 x 3 x 3 inches package with three (3) oil filters and (3) pieces of drain plug.
Bestseller No. 8
Set of 3 Genuine OEM Engine Oil Filter 15208-9E01A + Drain Plug 4STEED MOTORS 11026-JA00A compatible with Nissan Infiniti
  • ☑️ TOP QUALITY/ GUARANTEED
  • Do you want to avoid damage to your vehicle's engine? Replacing the oil filter is even more important than changing the air or fuel filter. This OEM filter will protect your vehicle by keeping harmful particles and dirt out, preventing premature wear and engine failure.
  • As for the DRAIN PLUG CRUSH WASHER GASKET many people take it for granted that aluminum and copper do not need to be replaced. However, they do "harden". Yes, you may be able to reuse the old one 1 or 2 times, but every time you reuse it, you are increasing the chances of a leak. Really, it's a small price to pay to do the job correctly and reduces the risk of oil leaks. If your mechanic confirms the failures of these parts you should replace them INSTANTLY to avoid downtime for your car.
  • 🔵 FEATURES:【OIL FILTER】: ORIGINAL part made with a unique blend of natural and synthetic materials in the media for better oil filtration and enhanced engine protection.【DRAIN PLUG CRUSH WASHER GASKET:】: High quality and durable part made of aluminum, fixed same as OEM.
  • 📦 PACKAGE INCLUDES: ‎8.46 x 4.29 x 3.03 inches package with three (3) oil filters and (3) pieces of drain plug.
Bestseller No. 9
NICECNC Engine Oil Cooler with Gasket Compatible with Nissan Altima Sentra 2.5L 2007-2012, 21300-JA06A, 21300-JA05A, 21304-JA00A, 21300-JG36A
  • Condition:100% Brand New AFTERMARKET PARTS.
  • Reference Nissan Part Number: 21300-JA06A
  • Reference Manufacturer Part Number:21300-JA05A 21300-JG36A 21300-JA06A 21304-JA00A
  • Reference Other Part Number: 21300JA05A 21300JG36A 21300JA06A 21304JA00A
  • Compatible with Nissan Altima/Sentra 2.5L 2007-2012.
SaleBestseller No. 10
BECKARNLEY 039-6616 Oil Cooler Seal
  • Matches OE form, fit and function
  • Made of high quality rubber material
  • Quality construction for durability
  • Packaged in clear plastic for easy visibility and identification of all components
  • Application specific for this vehicle

Since the Nissan 2.5 engine was originally manufactured and introduced, the 2.5L engine has gone through several upgrades, which helped the engine’s performance on the road.

Upgrades made to the engine increased fuel efficiency and engine consistency/reliability. Enhancements were also made to reduce engine emissions and improve the overall performance of the engine.

Some of the latest upgrades made to the newest model QR25DE engine (upgrades effective in 2007 and newer models) include:

  • A wider diameter intake manifold
  • Updated piston shape which helps to support higher compression
  • Cam profile upgrades
  • Piston, bearing, and additional coatings to reduce friction and heat when in use
  • Extra engine mount for added security
  • Higher resolution and horsepower for a more reliable and powerful engine

Features of the Nissan 2.5 engine:

Here are some of the specs found in the popular Nissan Altima engine:

  • It was introduced to the marketplace in 2001.
  • It offers between 175 to 182 horsepower, which varies depending on the model and year.
  • It has around 180 Torque.
  • It comes with a DOHC Valvetrain design to support consistent, reliable performance.
  • Features Inline-4 configuration.
  • It is manufactured with reliable aluminum block and head materials.
  • It has a 5:1 to a 10.5: 1 compression ratio.

Frequent Issues (and Repair Suggestions) with the Nissan 2.5L Engine:

Nissan Altima 2.5 Engine Common Problems

While it is considered to be one of the most reliable engines currently being used, there have been some issues, which occurred primarily on engines built from 2002 through 2006, which used early design concepts.

The company analyzed the engine after preliminary issues with earlier models and since 2007, there have been very few issues since the redesign.

According to TuningPro.com and others, here are a few of the issues that some Nissan owners may experience:

  • Issue: Exhaust manifold which uses pre-cat (pre-catalytic converters): This can break and cause damage to the engine because the materials used are not as sturdy as required.
  • Solution: Installing an affordable aftermarket exhaust manifold and adding a heat shield.
  • Issue: Intake and power valve screws: This issue is most often seen in Sentra and Altima models. These screws can enter the engine damaging the walls or head of the cylinder as well as the catalytic converter.
  • Solution: The company redesigned the screws to correct the issue. These new “butterfly” screws offer a long-term repair for models made from 2002 through 2005.
  • Issue: Oil leaks: Like many vehicle engines, the older they get, the more they may experience leaks. In the 2.5L engine, the key area for leaks is the valve cover gasket, which is made from a rubber-type material, which can falter when it is exposed to extreme heat.
  • Solution: When leaks occur, replace the cover gasket.
  • Issue: Timing chain tensioners can become faulty: This is a rare occurrence in the 2.5L engines, but may occur. This could lead to the timing chain faltering, resulting in loss of engine power and overall poor performance.
  • Solution: Have your timing chain checked. If it shows wear, you may need to have the timing belt or tensioners replaced

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