2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

The Nissan Altima 2.5L Cylinder Head is a replacement DOHC cylinder head for compatible Nissan Altima vehicles equipped with the 2.5-liter QR25DE four-cylinder petrol engine. Reference 1181182 appears in used-parts listings for this specific cylinder-head application; it is not a Nissan OEM part number and should be retained only as a seller, stock, salvage-yard, or interchange reference unless documentation proves otherwise.

An important fitment correction applies to the supplied title. The Nissan Altima Coupe was produced from 2008 through 2013, not 2007. For this cylinder-head interchange, documented applications include 2007–2012 Altima sedans and 2008–2013 Altima coupes, with additional emissions and Hybrid restrictions depending on the exact head. A matching interchange listing for reference 1181182 specifies the 2013 application as Coupe only, 2.5L four-cylinder, Federal emissions.

The Nissan Altima 2.5L Cylinder Head is suitable for engine rebuilding workshops, Nissan specialists, machine shops, automotive repair centers, vehicle rebuilders, engine-parts distributors, exporters, and wholesale buyers looking for compatible QR25DE engine components.

Nissan OEM Cylinder Head Reference

A key Nissan OEM reference associated with this application is:

11040-JA00A

Nissan-compatible OEM catalog data identifies 11040-JA00A as a Cylinder Head Assembly for 2007–2013 Nissan Altima applications equipped with the 2.5L QR25DE engine. It is also documented on selected Nissan Rogue and Sentra QR25DE applications.

The Nissan Altima 2.5L Cylinder Head should therefore be matched primarily by:

• Nissan OEM number
• Engine code
• Casting number
• Vehicle year
• Body style
• Emissions specification
• VIN where available

Reference 1181182 should not replace these technical fitment checks.

QR25DE 2.5L DOHC Engine

This cylinder head is associated with Nissan’s QR25DE engine family.

Relevant engine characteristics include:

• 2.5-liter displacement
• Inline four-cylinder configuration
• DOHC cylinder head
• 16-valve design
• Petrol/gasoline engine
• Timing-chain-driven camshafts

The Nissan Altima 2.5L Cylinder Head is specifically intended for compatible QR25DE applications and should not be confused with cylinder heads for Altimas fitted with the 3.5L VQ35DE V6 engine.

Engine code confirmation is recommended before ordering.

Correct Altima Coupe Fitment

The original product description says “Coupe 2.5L 4 Cylinder Fits 07-13 Altima,” but this wording can be misleading.

The accurate body-style breakdown is:

Altima Sedan

Compatible interchange applications can include selected:

• 2007 Nissan Altima 2.5L
• 2008 Nissan Altima 2.5L
• 2009 Nissan Altima 2.5L
• 2010 Nissan Altima 2.5L
• 2011 Nissan Altima 2.5L
• 2012 Nissan Altima 2.5L

Altima Coupe

The Altima Coupe application begins in 2008:

• 2008 Nissan Altima Coupe 2.5L
• 2009 Nissan Altima Coupe 2.5L
• 2010 Nissan Altima Coupe 2.5L
• 2011 Nissan Altima Coupe 2.5L
• 2012 Nissan Altima Coupe 2.5L
• 2013 Nissan Altima Coupe 2.5L

A Nissan technical bulletin identifies the relevant generations as 2007–2012 Altima Sedan (L32) and 2008–2013 Altima Coupe (CL32) with the QR25DE four-cylinder engine.

Therefore, the Nissan Altima 2.5L Cylinder Head should not be advertised as a “2007 Coupe” part.

Important 2013 Fitment Difference

The 2013 model year requires particular attention.

The Altima sedan changed generation for 2013, while the previous-generation Altima Coupe continued through 2013.

The interchange information matching reference 1181182 specifically states:

2013 Altima – Coupe, 2.5L four-cylinder, Federal emissions

and does not list the redesigned 2013 sedan under this particular interchange.

This distinction is important for preventing incorrect orders.

When selling the Nissan Altima 2.5L Cylinder Head for a 2013 vehicle, confirm that the car is an Altima Coupe and compare the original cylinder-head casting/OEM number.

Federal vs California Emissions

Another significant fitment factor is emissions specification.

The exact used cylinder-head interchange represented by reference 1181182 is documented for Federal-emissions vehicles. The matching listing specifically warns that this interchange does not fit California-emissions versions.

A remanufactured-cylinder-head specialist also identifies the related JA0 casting for Federal-emissions QR25DE applications and advises customers to verify the casting number.

Before supplying the Nissan Altima 2.5L Cylinder Head, customers should confirm:

• Federal emissions
• California emissions
• Original casting number
• OEM number

Do not claim compatibility with both emissions systems unless the actual head has been verified accordingly.

JA0 Cylinder Head Casting

A commonly documented casting identification for this generation is:

JA0 / JAO

Remanufactured-cylinder-head suppliers identify the JA0 casting with 2.5L QR25DE DOHC applications from this Altima generation.

However, the casting on the physical Nissan Altima 2.5L Cylinder Head should be inspected rather than assumed.

Photographs of the casting marks are useful for commercial buyers and engine rebuilders because they provide another way to confirm compatibility.

Hybrid Model Warning

The specific interchange represented by reference 1181182 is listed for non-Hybrid Altima applications during the relevant earlier years.

Although broader OEM catalog data may show QR25DE cylinder-head references across several Altima configurations, a used salvage head should be matched according to its exact donor and interchange information.

If the receiving vehicle is an Altima Hybrid, provide the VIN and original cylinder-head number before purchasing.

The Nissan Altima 2.5L Cylinder Head should not automatically be sold as universally interchangeable with Hybrid applications.

Cylinder Head vs Complete Cylinder Head Assembly

The phrase “cylinder head” does not automatically mean a complete assembled head.

Depending on how the actual unit is supplied, it may contain some or all of the following:

• Bare aluminum cylinder-head casting
• Intake valves
• Exhaust valves
• Valve springs
• Retainers
• Camshafts
• Camshaft caps
• Lifters/followers
• Variable valve timing components  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

These items should only be described as included when they are physically present.

A used Nissan Altima 2.5L Cylinder Head may be sold as a rebuildable core rather than a ready-to-install assembly.

One professional used-parts supplier specifically advises that used cylinder heads should generally be considered machinable/rebuildable, rather than automatically guaranteed ready for direct installation.

Cylinder Head Gasket Is Separate

A cylinder-head gasket is normally a separate engine component.

For these QR25DE applications, Nissan OEM reference:  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

11044-ET80A

is documented as a cylinder-head gasket for compatible 2007–2013 Altima 2.5L applications.

The gasket should not be assumed included with the Nissan Altima 2.5L Cylinder Head unless the supplied package specifically contains one.  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

During engine rebuilding, technicians commonly install a new head gasket rather than reusing the old gasket.

Head Bolts and Installation Components

Head bolts, gaskets, seals, timing components, manifolds, and other installation items should also be treated as separate unless supplied.  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

A cylinder-head replacement can require inspection or replacement of:

• Cylinder-head gasket
• Head bolts
• Valve-cover gasket
• Intake manifold gasket
• Exhaust manifold gasket
• Timing-chain components
• Camshaft seals
• Coolant seals  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

The exact contents of the Nissan Altima 2.5L Cylinder Head package should be itemized in the quotation.

Used Cylinder Head Inspection

A used cylinder head should be professionally inspected before engine assembly.

Important checks can include:

• Warpage
• Cracks
• Combustion chambers
• Valve seats
• Valve guides
• Camshaft journals
• Deck surface
• Coolant passages
• Oil passages
• Thread condition
• Previous machining  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

A machine shop can pressure-test and measure the cylinder head to determine whether machining or rebuilding is required.  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

A used component’s visual appearance alone does not establish that it is ready for installation.

Why Cylinder Heads Require Replacement

A replacement Nissan Altima 2.5L Cylinder Head may be required after:

• Engine overheating
• Cylinder-head warping
• Cracked casting
• Head-gasket failure
• Valve damage
• Timing-related engine damage
• Excessive camshaft-journal wear
• Damaged threads
• Engine rebuilding  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

The underlying cause of the original engine failure should be diagnosed before the replacement cylinder head is installed.  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

Cross-Model QR25DE Applications

OEM 11040-JA00A is also documented for selected:

• Nissan Rogue 2.5L
• Nissan Sentra SE-R / Spec V 2.5L

in addition to Altima applications.  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

This does not mean every QR25DE cylinder head is universally interchangeable.

Emissions specification, casting number, production date, and engine configuration should still be checked.

Suitable for B2B Buyers

The Nissan Altima 2.5L Cylinder Head is suitable for:  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

Engine Rebuilding Shops

For repairing QR25DE engines.

Automotive Machine Shops

For pressure testing, surfacing, valve work, and rebuilding.

Nissan Repair Specialists

For engine-specific mechanical repair.

Used Auto Parts Dealers

For stocking Altima and QR25DE engine components. 2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

Vehicle Rebuilders

For restoring mechanically damaged Nissan vehicles.

Export and Wholesale Buyers

Commercial quantities can be requested subject to condition and availability.

Information Required Before Ordering

For correct fitment, provide:

• Vehicle year
• Sedan or Coupe
• VIN
• QR25DE 2.5L confirmation
• Federal or California emissions
• Hybrid or non-Hybrid
• Original OEM number
• Cylinder-head casting number
• Required quantity
• Delivery destination  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

Request a Quote

For pricing and availability of the Nissan Altima 2.5L Cylinder Head, provide the vehicle year, body style, VIN, QR25DE engine confirmation, emissions specification, casting number, quantity, and shipping destination.  2007-2013 Nissan Altima 2.5L DOHC Cylinder Head

Reference 1181182 should be treated as a used-parts inventory/interchange reference rather than a Nissan OEM number. Exact OEM number, bare or assembled condition, camshafts, valves, gaskets, head bolts, machining status, packaging, MOQ, availability, and shipping terms must be confirmed for the actual cylinder head being supplied. 2007-2013 Nissan Altima 2.5L DOHC Cylinder Head