Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE
Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE is a brand-new valve kit that supplies eight intake and eight exhaust valves sized to OEM specifications. Priced at $32.50, it restores proper airflow and compression, making it ideal for owners restoring or maintaining a Sentra, Altima, Frontier or Rogue with the QR25DE engine.
● In stock
Buy at Lab Work Auto →Price and availability may change. Click to see current details on Lab Work Auto.
Key features
- Exact OEM dimensions – head, stem and length match factory specs.
- Full set – eight intake and eight exhaust valves.
- Heat-treated steel construction for durability.
- Forged material resists wear at high mileage.
- Ready-to-install, no extra machining needed.
- Competitive $32.50 price for a complete kit.
Pros
- +Precise OEM fit eliminates valve seat work.
- +Heat-treated steel extends valve life.
- +Full 16-valve kit saves time and cost.
Cons
- −Requires removal of existing valves; labor intensive for beginners.
- −No valve seat inserts included; may need separate purchase.
About Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE
What is Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE?
This valve kit replaces the original intake and exhaust valves on the QR25DE 2.5-liter DOHC engine found in 2002-2010 Nissan Sentra, Altima, Frontier and Rogue models. Each kit contains eight intake valves (head 35.6 mm, stem 6 mm, length 97.2 mm) and eight exhaust valves (head 30.7 mm, stem 6 mm, length 98.8 mm), all manufactured to OEM tolerances from virgin steel. The components arrive fully machined, heat-treated and ready for installation, eliminating the need for aftermarket re-grinding or aftermarket valve seats. Proper valve timing and seal integrity are critical for maintaining optimal combustion efficiency and emissions compliance. This kit restores the original flow characteristics, helping the engine meet factory power ratings and fuel-economy targets.
Key features
- Exact OEM dimensions — head, stem and length match factory specifications for a seamless fit.
- Full valve set — eight intake and eight exhaust valves provide a complete replacement.
- High-strength steel — forged material resists wear and maintains valve lift under high mileage.
- Heat-treated finish — improves durability and resistance to thermal fatigue.
- Ready-to-install — no additional machining required, saving labor time.
- Competitive price — priced at $32.50 for a full kit, offering strong value.
Who is Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE for?
The kit is aimed at DIY enthusiasts, independent mechanics and professional shops that service the QR25DE engine family. It is especially useful for owners who have experienced valve wear, loss of compression, rough idle or reduced power and need a reliable, cost-effective replacement without sourcing individual valves.
How does Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE compare?
Compared with generic aftermarket valve sets, this kit offers tighter dimensional control and a heat-treated surface that typical low-cost alternatives lack. While premium OEM-direct kits may carry a higher price tag, they often provide the same material quality at a similar cost, making this Lab Work Auto offering a balanced choice between price and performance.
Best use cases
- →Replacing worn valves on a high-mileage Sentra.
- →Restoring performance after engine overheating.
- →Upgrading a DIY QR25DE rebuild project.
- →Preparing a Frontier for off-road use.
- →Refreshing a Rogue’s power output.
Is Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE right for you?
If you own a 2002-2010 Nissan model with the QR25DE 2.5 L DOHC engine and have identified valve wear, this kit is a solid choice. It suits experienced DIYers and professional shop technicians who can remove and install valves with standard tools. Compared with buying individual valves, the kit saves time and ensures matching pairs. For those seeking premium OEM-direct parts, a single-source dealer may offer a comparable kit at a higher price, while generic aftermarket sets often lack the precise dimensions and heat-treated finish of this Lab Work Auto offering.
How it compares: Compared with generic aftermarket valve sets, this kit provides exact OEM dimensions and a heat-treated steel finish, which most low-cost options lack. Premium OEM-direct kits match quality but cost more, making Lab Work Auto’s kit a balanced middle ground for value-focused rebuilds.
More from Lab Work Auto
#63P-81950-00-00 TRIM RELAY For YAMAHA OUTBOARD F150 & 250 Part
$17.80
(4 pcs) For Ford F-150 Bed Interface Plates Standard Tie Down FL3Z9928408AB
$16.82
-6 An X 5/16-24 O Ring Hydroboost Spittier/Return Port Fitting Car Accessories
$8.20
-6AN AN6 Fuel Adapter Fitting to 3/8 Quick Connect LS W/ Clip Female Black GM
$7.91Frequently Asked Questions
What does the intake/exhaust valve kit replace in a QR25DE engine?
▾
The kit replaces all sixteen valves—eight intake and eight exhaust—that control airflow in the QR25DE 2.5 L DOHC engine. By swapping the original worn or damaged valves with the new OEM-matched components, you restore proper compression, fuel efficiency, and power output.
Does the kit include any hardware for installation?
▾
The package supplies only the valves themselves; it does not include valve seat inserts, gaskets, or specialized tools. Installers must provide their own torque wrench, valve spring compressor and any sealing components required for a complete rebuild.
How do the dimensions of these valves compare to the original OEM parts?
▾
Each intake valve measures 35.6 mm head diameter, 6 mm stem and 97.2 mm overall length, while each exhaust valve is 30.7 mm head, 6 mm stem and 98.8 mm length. These figures match the factory specifications for the QR25DE engine, ensuring a direct fit without modification.
Is this valve kit suitable for high-performance tuning?
▾
The kit is designed for standard OEM replacement and provides reliable durability for everyday driving. While it will support modest performance gains after a rebuild, enthusiasts seeking aggressive cam profiles or higher lift may need specialized high-performance valves beyond the stock specifications.
Can a beginner install this valve kit themselves?
▾
A beginner can replace the valves if they have basic mechanical skills, proper hand tools, and access to a service manual. However, the process involves removing the cylinder head, compressing valve springs, and precise torque settings, so many prefer professional assistance for confidence and safety.
How much does Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE cost?
▾
Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE is $32.50 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE in stock at Lab Work Auto?
▾
Yes, Intake Exhaust Valve for 2002-2010 Nissan Sentra Suzuki 2.5L DOHC QR25DE is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-6591