Toyota 2AZ-FE Cylinder Head Gasket 11115-28010 - Multi-Layer Steel (MLS) with 0.4 mm Thickness and 90 mm Bore Diameter

The cylinder head gasket carrying Toyota genuine part number 11115-28010 (also 1111528010) seals the interface between the cylinder head and engine block on the 2AZ-FE 2.4L inline-4 petrol engine. This OE-spec replacement gasket is the factory-correct sealing component for the first-generation Toyota Harrier (ACU1# and ACU2# chassis) — the Japanese-market luxury SUV that shares its powertrain with the Lexus RX.

The 2AZ-FE is a 2,362 cc DOHC 16-valve engine with an 88.5 mm × 96.0 mm bore and stroke, delivering 160 hp (118 kW) at 5,600 rpm and a compression ratio of 9.6:1. This engine was Toyota's primary 2.4L offering from 2000 onwards, powering a range of global models including Camry, RAV4, Highlander, Previa, and the Lexus RX330 (in 2.4L markets).

This Toyota 2AZ-FE cylinder head gasket 11115-28010 directly replaces the factory component in the following vehicle configurations:

The ACU1# chassis code covers the first-generation (2000-2003) Toyota Harrier with the 2AZ-FE engine; the ACU2# code covers the facelifted version (2003-2006). Across all these platforms, the 2AZ-FE engine architecture — cylinder bore spacing, water jacket passages, and bolt pattern — remains identical, making the 11115-28010 gasket the correct direct replacement for the entire 2AZ-FE family from 2000 through the early 2010s.

The Toyota 2AZ-FE engine has three well-documented failure scenarios directly related to the head gasket and cylinder head bolt system:

• Multi-Layer Steel (MLS) Construction — Proven for aluminium-aluminium engines with stainless steel fire rings designed for 90 mm bore diameter
• 0.4 mm Compressed Thickness — OE factory specification for standard 2AZ-FE engines
• Precision 90 mm Fire Ring Alignment — Ensures gas-tight sealing around combustion chambers
• Elastomer Coating — No additional sealants required during installation
• Direct OE Cross-Reference — Toyota part number 11115-28010 with related OE numbers 11115-28011, 11115-28012, 11115-28013, and 11115-28040
• Part of Complete Engine Overhaul System — Included in 04111-28056 full engine overhaul gasket set
• IATF 16949 / ISO 9001 Certified Manufacturing — Automotive industry's highest quality standards with full traceability

A certificate of conformance (COC) with batch material analysis is available for wholesale orders.

• Individual packaging: Sealed in anti-static VCI bag, foam-lined carton
• Carton dimensions: Approximately 45 × 25 × 2 cm (18 × 10 × 1 inch)
• Net weight: Approximately 0.4-0.6 kg
• Master carton: 50 units per export carton (palletisable)
• Lead time: 3-7 working days for stock orders; 15-25 days for production orders above 200 pieces
• Minimum order quantity: 1 piece (sample order available)
• Shipping methods: FedEx, UPS, DHL for sample quantities; sea freight (LCL/FCL) from Shanghai, Ningbo, or Guangzhou ports
• H/S Code: 8484.10

For workshops performing a full top-end service, the supplier also stocks matching 2AZ-FE torque-to-yield cylinder head bolts (part number 90910-02170), valve-stem seal sets, rocker cover gaskets, and intake manifold gaskets for the same engine family.

• Confirm the gasket thickness before ordering. The standard specification for this engine family is 0.4 mm. If the cylinder head has been resurfaced during a prior repair — or if piston protrusion measurements are outside the normal range — a different thickness may be required.
• Always replace cylinder head bolts with new genuine-spec bolts. Torque-to-yield bolts cannot be reused. Follow the Toyota workshop manual for the correct tightening sequence: staged torque values followed by precise angle turns using an angle wrench.
• Check the cylinder head and block surfaces for warpage using a precision straight edge and feeler gauge. The 2AZ-FE specification for head flatness is ≤0.05 mm across the full length.
• Clean and chase all bolt holes in the cylinder block to remove debris and old thread sealant. Compressed air must be used to clear each hole before bolt installation.
• Install the gasket dry — no additional sealants. The MLS gasket's elastomer coating is heat-activated and must make direct contact with clean, oil-free surfaces to bond correctly.
• Flush the cooling system and fill with fresh Toyota Super Long Life Coolant (red) or Long Life Coolant (green) mixed 50/50 with distilled water.
• Consider professional installation. Head gasket replacement on the 2AZ-FE requires specialised tools and expect 6-8 hours of labour in a professional workshop.