Description
Part#: ALL-86336
Manufacturer: Nissan
Year Range: 02-06
Engine Size: 2.5L - 2500cc - L4 - Dohc - QR25DE
Description: 02-06 Nissan 2.5L 2500cc - L4 - DOHC 8H3 Cylinder Head
Upgrade your Nissan Altima’s performance with the high-quality 02-06 Nissan 2.5L 2500cc - L4 - DOHC 8H3 Cylinder Head. Engineered for precision and reliability, this cylinder head is designed to fit seamlessly with models produced between 2002 and 2006, enhancing your vehicle's engine efficiency and power output. If you're looking to swap out a worn component or enhance your vehicle's performance, this cylinder head provides the robust durability and high-quality craftsmanship you require.
This cylinder head is compatible with the 2006 Nissan Altima head gasket specifications, ensuring a perfect fit and optimal functionality. It features a robust design to withstand high engine temperatures and pressures, providing a reliable solution for your Nissan Altima engine 2.5 L 4-cylinder needs. The 06 Nissan Altima 2.5 engine has been meticulously engineered to deliver outstanding performance, and this cylinder head plays a crucial role in maintaining that standard.
The Nissan Altima engine 2.5 L 4-cylinder is known for its efficiency and power, and this cylinder head complements these features by ensuring smooth operation and maximum engine output. Whether you're dealing with issues in your current engine or simply performing a routine upgrade, this component is essential for maintaining the high standards of your vehicle.
The Nissan Altima 2.5 S engine stands out as a top option for anyone looking for a blend of dependable reliability and impressive performance. This cylinder head supports the engine's efficiency by offering enhanced airflow and combustion capabilities. By replacing your old or damaged cylinder head with this high-quality part, you ensure that your 02-06 Nissan 2.5L 2500cc - L4 - DOHC 8H3 Cylinder Head performs at its best.
When selecting a replacement cylinder head for your Nissan Altima, it is essential to choose a component that aligns perfectly with your engine's specifications. Our cylinder head is designed to be fully compatible with the 2006 Nissan Altima head gasket, ensuring a tight seal and preventing leaks. Its advanced design meets the exacting standards of the Nissan Altima engine 2.5 L 4-cylinder, guaranteeing a perfect fit and excellent performance.
The 06 Nissan Altima 2.5 engine benefits from this cylinder head’s superior construction, which enhances the engine's overall efficiency and longevity. The Nissan Altima engine 2.5 L 4-cylinder requires high-quality components to maintain peak performance, and this cylinder head is built to provide just that.
In summary, the 02-06 Nissan 2.5L 2500cc - L4 - DOHC 8H3 Cylinder Head is an essential component for anyone looking to maintain or upgrade their Nissan Altima’s engine. Designed to meet the needs of the Nissan Altima 2.5 S engine, it ensures a perfect fit and optimal performance. Upgrade today to experience the benefits of high-quality, reliable Nissan Cylinder Heads for your vehicle.
For assistance or queries, please contact our expert support team via our contact form, call 866-766-9955, or email sales@alliedmotorparts.com. We're ready to help you at every step. Interested in cylinder heads? Visit our blog section for more information.
Learn more about Nissan Cylinder Head.
This Cylinder Head has a core charge of $100.00 included in the cost. This charge is FULLY REFUNDED upon return. We will include a prepaid label for the return freight.
The cylinder head included in this listing will fit the vehicles listed below. It is also important to review / confirm the fitment notes above to assure the vehicle specifics of the head are correct for your application. If you have any question that this may not be the correct head for your vehicle or need help in locating the correct head, please contact us via phone or email prior to making a purchase.
Compatible Vehicle
| MAKE | MODEL | YEAR | ENGINE |
|---|---|---|---|
| Nissan | Altima | 2002-2006 | 2.5L 2500CC l4 GAS DOHC |
| Nissan | Sentra | 2002-2006 | 2.5L 2500CC l4 GAS DOHC |
Not sure this is your casting? Call 866-766-9955 with your casting number and your vehicle's year, make and engine, and we'll confirm it before you buy.
Process & Warranty
Cylinder Head Rebuilding Process
1. Initial Inspection: As a unit comes to our shop, we give it an initial inspection to determine whether there is any reason the head should not proceed to rebuilding. This quickly catches problems such as cracks, casting damage and other conditions that would halt the process for that casting.
2. Teardown: The cylinder head is fully disassembled, which reveals other areas of potential damage to the casting. The parts and the head are separated and go through different cleaning processes.
3. Cleaning: Cast iron heads are cleaned in a thermal cleaning system — baked at 600° to reduce grease and oil to ash, then put through a steel-shot machine for a brilliant finish. Aluminum heads are baked at a lower temperature or put through a high-pressure wash, then glass-beaded.
4. Head Inspection: After cleaning, heads are pressure tested or Magnafluxed to find any cracks. All bolt holes, valve guides, valve seats and other areas are inspected for broken bolts, broken taps, cracked guides and other impairments. Straightness and cam bore wear are also checked.
5. Machining: All heads have guides installed to meet OE conditions and are resurfaced to far exceed factory specifications for surface finish. A three-angle valve job achieves valve seat runout under .001". Valves are ground for a perfect seal between valve and seat.
6. Assembly: New OE-style valve guide seals are installed. Springs are tested for proper seat pressure. Valve seat sealing is vacuum-checked for an airtight fit. Lifters are bled and rebuilt for zero lash after startup. Cams are polished and clearances are checked twice to meet OE oil clearances.
7. Final Inspection: Every head is visually inspected — surface finish, lash, bolt holes and all other areas — to ensure a quality cylinder head.
Questions about our cylinder head services? Call 1-866-766-9955.
Warranty — 12 months from purchase
Match the head before installation. We will not warranty an incorrectly installed head. Call us immediately with any questions or concerns about your purchase.
First 3 months:
- Repair or replacement of the cylinder head.
- Gasket set supplied for reinstallation.
- Labor calculated from book time at $25.00 per hour, up to a maximum of 10 hours.
- Replacement of fluids and filters.
Remaining 9 months:
- Repair or replacement of the cylinder head.
- Gasket set supplied for reinstallation.
- Replacement of fluids and filters.
- No labor is covered.
Warranty is void if:
- The head was improperly installed.
- The head was overheated (heat tab melted or missing).
- The head received insufficient oiling.
- The cooling system operated improperly.
Warranty returns must be sent to Allied Motor Parts uncleaned and fully assembled — any disassembly voids the warranty — and must be accompanied by proof of purchase. There is no warranty on threaded bolt holes after installation.
This warranty is in lieu of any other warranty, expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose.
Quality Assurance
Here’s why our cylinder heads stand out:
Thorough Inspection: Every head undergoes a complete teardown, cleaning, and detailed inspection for cracks and imperfections.
Advanced Cleaning: Thermal cleaning for cast iron and high-pressure washing for aluminum ensures a brilliant finish.
Precision Machining: CBN resurfacing, triple-angle valve cuts, and guide installations exceed OEM specifications.
Rigorous Testing: Vacuum tests, tension checks, and pressure tests guarantee performance and durability.
High-Quality Components: New seals, plugs, and rebuilt lifters ensure optimal functionality.
Final Assurance: Each head is inspected, stamped, and stored in a climate-controlled environment.
Wide Availability: Over 2,000 cylinder heads for all makes and models, ready for repair or exchange.
I'm always a little skeptical about ordering parts online.
I delayed my review until after the job was completed. So far I have just over 100 miles on my car. Which is just a daily driver to work. I commute a whole 12 miles a day.
My loss of coolant and oil problems are gone!
The new head is preforming flawlessly.
Just a suggestion, I do wish the head came with the associated studs. I was able to retrieve them from the old cylinder head. I did attempt to buy new ones from several local auto parts stores.
And apparently Nissan studs are difficult for them to get fo some reason. I thought that was something I could easily get or right off the shelf.
Thank you for the great product!
Thank you for your order.
I needed a new head and they had the best price and service. I got a perfect rebuild fast.
Thank you!
Thank you for your order!