Nissan TIIDA SAF MAKE 2006-2013 QR20 QR25 High Strength Cylinder Head QR20 QR25 Engine 2.5L Altima/Maxima/Sentra/X-Trail – OEM 11040-MA00A

Product Overview: This high-strength cylinder head assembly is engineered for the Nissan QR20 and QR25 2.0 and 2.5-litre four-cylinder petrol engines, the powerplants fitted to the Altima, Maxima, Sentra, X-Trail and related models. It is supplied with valves included and machined to original equipment tolerances, providing a reliable replacement for a warped, cracked or valve-damaged original cylinder head.

Key Features: The casting is produced from high-strength aluminium alloy and CNC-machined for accurate deck flatness, correct valve seat concentricity and consistent combustion chamber volume. Valve guides are fitted and seats are cut to the correct angles for reliable sealing and even compression across all four cylinders, and the cam carrier surfaces are finished to maintain correct bearing clearance in the DOHC valvetrain. Intake and exhaust flanges are machined to original profiles for reliable gasket sealing, and cooling passages follow the factory layout for uniform heat distribution.

Vehicle Compatibility: This head fits Nissan Tiida SAF Make (2006-2013), NV350 Urvan (2012 onwards), Q30 (2015 onwards), Terra (2018 onwards), Tiida JPN Make (2006-2012) and Q60/G Coupe (2016 onwards) models, together with related Altima, Maxima, Sentra and X-Trail applications equipped with the QR20 or QR25 engine. Confirm the engine code and OE reference before ordering.

Specifications: Engine code QR20 / QR25; displacement 2.0 L and 2.5 L; inline four-cylinder petrol; material aluminium alloy; standard size; new condition; valves included; complete assembly; 12-month warranty; intended for replacement and repair.

OEM / Reference Numbers: 11040-MA00A, 11041-MA00A, 11040-8H301 and 11040-8H302. Cross-reference these numbers with the casting identification on the original cylinder head to confirm the correct variant.

Applications: Suitable for sedans, hatchbacks, SUVs, vans and light commercial vehicles, covering everyday repairs, engine rebuilds, workshop overhauls and fleet maintenance where a factory-specification head is required.

Benefits / Replacement Information: Installing this assembly restores compression, resolves coolant loss and combustion leakage caused by cracks or distortion, and avoids the expense of re-machining the original casting. A complete unit shortens repair time and ensures factory-matched sealing.

Installation or Fitment Notes: Installation should be carried out by a qualified technician. Clean and check the block deck for flatness, use new head bolts where specified, and torque in the correct sequence to the manufacturer's specification. Replace the head gasket, timing components and coolant, verify cam timing and valve clearances, then pressure test and bleed the cooling system before road use.