| Parameter | Specification |
|---|---|
| OEM Number | 800151157 |
| Brand | XCMG (Original Equipment) |
| Type | Multi-Layer Steel (MLS) with elastomer coating |
| Layers | 3 layers (2 steel + 1 stainless steel stopper layer) |
| Compressed Thickness | 1.20 mm ±0.05 mm |
| Bore Diameter | 102 mm (matching XCMG 6-cylinder diesel) |
| Fire Ring Material | Stainless steel, embossed for high sealing pressure |
| Coating | Nitrile rubber (NBR) on both sides, 0.05 mm thick |
| Max Cylinder Pressure | 22 MPa (220 bar) |
| Operating Temperature Range | -40°C to +450°C (continuous) |
| Compression Recovery | >90% after 1,000 thermal cycles (ISO 10065) |
| Number of Cylinders | 6 (inline) |
| Coolant & Oil Passages | Integrated silicone beading around all ports |
| Torque Specification | Stage 1: 80 Nm, Stage 2: 120 Nm, Stage 3: +90° |
| Applicable XCMG Graders | GR135, GR165, GR180, GR200, GR2003, GR215, GR260, GR300 |
The genuine 800151157 cylinder head gasket utilizes three-layer steel construction: two spring steel layers and a stainless steel stopper layer. The embossed fire rings around each cylinder create high localized clamping force, preventing blow-by even under peak combustion pressures. Unlike fiber or composite gaskets, MLS gaskets do not compress over time, maintaining consistent head bolt torque for the life of the engine.
Each layer is coated with nitrile rubber that flows into micro-irregularities on the cylinder head and block surfaces, ensuring a perfect seal against coolant, oil, and combustion gases. The 800151157 gasket is laser-cut with precision tolerances of ±0.1 mm, guaranteeing accurate alignment of all coolant and oil passages. This eliminates the risk of blocked galleries that can cause localized overheating.
The 800151157 gasket withstands continuous cylinder head temperatures up to 450°C around the fire rings. The stainless steel stopper layer prevents the gasket from crushing under high bolt loads, maintaining a consistent compressed thickness of 1.20 mm. This ensures proper piston-to-valve clearance and stable compression ratios. Thermal cycle testing (1,000 cycles from -40°C to +120°C) shows zero degradation in sealing performance.
In field trials on XCMG GR2003 graders operating in Australian mines, the 800151157 gasket lasted over 12,000 hours without any coolant or compression leakage. Competitor gaskets failed at around 6,000 hours due to fire ring erosion. Genuine XCMG gaskets also resist corrosive attack from EGR coolers and biodiesel blends, thanks to the nitrile coating’s chemical resistance.
A failing head gasket causes coolant loss, white smoke from exhaust, oil contamination (milky appearance), and loss of compression. The 800151157 eliminates these issues. Engine rebuilds using genuine XCMG gaskets show 15% higher compression readings compared to aftermarket alternatives, resulting in better cold starts and fuel economy.
The gasket’s integrated silicone beadings around water and oil passages provide an additional sealing barrier. Even if the cylinder head has minor surface imperfections (within 0.05 mm flatness), the elastomer coating compensates. For maximum reliability, always resurface the cylinder head to a finish of 30-60 Ra before installing 800151157.
Before installing 800151157, clean the cylinder block and head surfaces with a degreaser. Do not use abrasive pads that can scratch the surface. Check flatness: block ≤0.03 mm, head ≤0.05 mm. Apply no additional sealant – the gasket’s coating is self-sealing. Place the gasket over dowel pins. Install cylinder head bolts and lubricate threads with engine oil.
Tighten in three stages following the sequence from center outward: Stage 1: 80 Nm, Stage 2: 120 Nm, Stage 3: tighten an additional 90 degrees. After 100 operating hours, retorque the bolts to 120 Nm (cold engine). Never reuse head bolts – always install new XCMG bolts (sold separately) to ensure proper clamp load. The 800151157 gasket cannot be reused once compressed.
Counterfeit head gaskets often use single-layer steel or low-grade fiber that fails quickly. They lack the embossed fire rings and have inconsistent bore diameters, leading to hot spots and pre-ignition. Genuine 800151157 gaskets are manufactured in an ISO/TS 16949 facility, with 100% visual and dimensional inspection. Each gasket comes with a traceability label and installation instructions.
Using OEM parts preserves your engine warranty and ensures compatibility with XCMG’s torque specifications. The 800151157 also includes pre-coated micro-sealant that activates at engine operating temperature. Don’t risk a catastrophic engine failure from a blown head gasket – choose genuine XCMG quality.
3-layer steel with stopper layer, no compression loss over time.
Withstands extreme combustion temperatures.
Nitrile coating + silicone beading around all ports.
Common symptoms of a failed head gasket include: coolant loss without external leaks, white smoke from exhaust, bubbling in radiator, oil contamination (milky residue), and misfire on cold start. Use a combustion leak tester (block tester) to confirm exhaust gases in coolant. If the 800151157 gasket fails, inspect the cylinder head for cracks or warpage.
After replacing the gasket, perform a cooling system pressure test at 150 kPa for 30 minutes. No pressure drop indicates proper sealing. Also run the engine and check for external leaks around the head-to-block joint. Monitor coolant and oil levels daily for the first week. If overheating persists, check the radiator, thermostat, and water pump.
Store spare 800151157 gaskets in original packaging, flat (not folded), at room temperature. Shelf life is 5 years. Do not expose to direct sunlight or ozone. Always inspect the gasket for damage before installation.
XCMG’s global parts network stocks the 800151157 cylinder head gasket in regional warehouses across North America, Europe, Asia, Middle East, and Africa. Typical lead time: 3-5 business days for air freight. Bulk orders (25+ pieces) qualify for sea freight discounts and custom palletization.
For fleet customers, we offer core exchange programs and consignment stock. Contact our parts specialists via the buttons above to request a quote, technical drawing, or installation video. We also provide torque sequence diagrams and surface finish specifications for engine rebuilders.
*All specifications based on XCMG original equipment standards. Always resurface cylinder head before installation. OEM number 800151157 is a registered XCMG component. Images are representative; actual product may vary.
For any inquiries regarding the 800151157 XCMG Cylinder Head Gasket or other motor grader engine parts, contact our team via the “Send Email” or “Inquiry Now” buttons above. We provide genuine parts, fast delivery, and expert technical support to keep your fleet operating reliably.
