Yimi (Guangzhou) Automotive Parts Co, Ltd
| Payment Terms | T/T,Western Union |
| Net Weight | 0.3-0.5 kg |
| OEM Part Number | 11044-MA00A (also 11044MA00A) |
| Packaging Details | Neutral Package or as customers’ request |
| Supply Ability | 10000 pcs/month |
| Coating | Viton rubber on outer layers |
| Installation Method | Dry installation |
| Material | Stainless steel with elastomer coating |
| Thickness | 0.5 mm (compressed) |
| Gasket Type | Multi-Layer Steel (MLS) |
| Bore Diameter | 86.0 mm (QR20DE/SR20DE); 89.0 mm (QR25DE) |
| Delivery Time | 5-8 Work Days |
| Brand Name | YIMI |
| Place of Origin | China |
| Certification | ISO/TS16949 |
| Model Number | Nissan QR20DE QR25DE SR20DE |
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Product Specification
| Payment Terms | T/T,Western Union | Net Weight | 0.3-0.5 kg |
| OEM Part Number | 11044-MA00A (also 11044MA00A) | Packaging Details | Neutral Package or as customers’ request |
| Supply Ability | 10000 pcs/month | Coating | Viton rubber on outer layers |
| Installation Method | Dry installation | Material | Stainless steel with elastomer coating |
| Thickness | 0.5 mm (compressed) | Gasket Type | Multi-Layer Steel (MLS) |
| Bore Diameter | 86.0 mm (QR20DE/SR20DE); 89.0 mm (QR25DE) | Delivery Time | 5-8 Work Days |
| Brand Name | YIMI | Place of Origin | China |
| Certification | ISO/TS16949 | Model Number | Nissan QR20DE QR25DE SR20DE |
| High Light | Nissan OEM MLS cylinder head gasket ，Viton-coated Nissan head gasket ，QR25DE SR20DE engine gasket | ||
The cylinder head gasket bearing Nissan genuine part number 11044-MA00A (also listed as 11044MA00A) seals the critical interface between the cylinder head and engine block on a wide range of Nissan passenger and commercial vehicles. This original equipment (OE) replacement component is designed for the QR20DE (2.0L), QR25DE (2.5L), and SR20DE (2.0L) engine families, which power numerous global models including the Nissan X-Trail, Altima, Frontier, NV350 Caravan, Atlas, Urvan, and Silvia (S13/S14/S15).
The QR20DE is a 1,998 cc DOHC 16‑valve inline‑4 petrol engine with a bore and stroke of 86.0 mm × 86.0 mm; the QR25DE displaces 2,488 cc with an 89.0 mm × 100.0 mm bore and stroke configuration; the SR20DE shares the same 86.0 mm × 86.0 mm square bore‑stroke design. These engines operate at compression ratios ranging from 9.5:1 to 10.5:1 (depending on variant), generating sustained cylinder pressures that demand a precision‑engineered sealing solution.
The gasket is constructed from multi‑layer steel (MLS) — typically three or more precision‑stamped embossed steel layers with the outer layers utilizing a Viton rubber coating. This MLS design maintains consistent clamping force across thousands of thermal cycles, a critical requirement for engines with aluminum cylinder heads mounted to aluminum engine blocks (in the QR series) or iron blocks (in the SR series). Unlike older composite gaskets, MLS technology requires no additional sealants — installation is performed dry.
A failing cylinder head gasket on any of these Nissan engines typically reveals itself through:
Replacing a damaged gasket with this genuine OE component restores factory compression, maintains proper oil and coolant separation, and returns the engine to its original sealing integrity.
This Nissan cylinder head gasket 11044-MA00A directly replaces the factory sealing component in the following configurations:
| Model | Generation | Years | Notes |
|---|---|---|---|
| Nissan X‑Trail | T30 / T31 | 2000-2013 | 2.0L & 2.5L QR variants |
| Nissan Altima | L30 / L31 | 2001-2013 | 2.5L QR25DE |
| Nissan Frontier / Navara | D22 / D40 | 2001-2014 | 2.5L QR25DE |
| Nissan NV350 Caravan / Urvan | E26 | 2012-present | QR20DE / QR25DE |
| Nissan Atlas | H41 / H42 | 2000-2014 | Commercial chassis |
| Nissan Sentra / Sylphy | N16 / G10 / G11 | 2000-2012 | 2.0L QR20DE |
| Nissan Bluebird Sylphy | G10 / G11 | 2000-2012 | 2.0L QR20DE |
| Model | Generation | Years | Notes |
|---|---|---|---|
| Nissan Silvia | S13 / S14 / S15 | 1988-2002 | 2.0L SR20DE / SR20DET |
| Nissan 180SX / 200SX | S13 | 1989-1998 | 2.0L SR20DE |
| Nissan Primera | P10 / P11 | 1990-2002 | 2.0L SR20DE |
| Nissan Bluebird | U13 / U14 | 1993-2001 | 2.0L SR20DE |
| Nissan Pulsar / Sentra | N14 / N15 | 1991-2000 | 2.0L SR20DE |
The gasket is comprised of multiple embossed layers of stainless steel, with the outer layers utilising a Viton rubber coating. This MLS design maintains consistent clamping force through thousands of thermal cycles — a critical requirement for engines with aluminum cylinder heads mounted to aluminum or iron blocks.
The outer layers carry a heat‑activated Viton (fluoroelastomer) rubber coating. When the engine reaches operating temperature, the coating flows into microscopic surface imperfections, sealing oil and coolant passages without the need for additional sealants.
Each cylinder opening is surrounded by a stainless steel fire ring that is pre‑compressed during manufacturing. When the cylinder head is torqued to specification, the fire ring compresses further, creating a gas‑tight seal around the combustion chamber.
This gasket is a genuine Nissan OE component, meaning it is manufactured to the exact specifications and engineering drawings used in the factory assembly of QR20DE, QR25DE, and SR20DE engines.
The QR20/QR25 engines operate at compression ratios of 9.5-10.5:1, while the SR20DE produces 9.5:1 compression in naturally aspirated form. An MLS gasket is the only design that reliably seals these pressures for the full service life.
| QC Item | Verification Method |
|---|---|
| Fire ring bore alignment | Laser measurement — matched to 86.0 mm (QR20/SR20) or 89.0 mm (QR25) bore specifications |
| Gasket thickness (compressed) | Digital micrometer at multiple points — verified against Nissan service spec (0.5 mm nominal) |
| Layer registration | Optical inspection — all MLS layers align within OE tolerance |
| Fire ring material | Material certification confirming stainless steel grade per Nissan specification |
| Viton coating integrity | Visual and adhesion test — no voids, cracks, or missing coating on sealing beads |
| Full dimensional inspection | CMM verification of bolt hole alignment, water jacket ports, and oil feed passages |
| Anti‑corrosion treatment | VCI (Vapor Corrosion Inhibitor) sealed packaging for long‑term storage |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi(Guangzhou) Automotive Parts Co,Ltd located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv... Yimi(Guangzhou) Automotive Parts Co,Ltd located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv...
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