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1.3mm Thickness Multi-Layer Steel (MLS) Cylinder Head Gasket for Toyota 15B 4.1L Diesel Engine

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1.3mm Thickness Multi-Layer Steel (MLS) Cylinder Head Gasket for Toyota 15B 4.1L Diesel Engine

MOQ:	10 pcs
Price:	Negotiable
Standard Packaging:	Neutral Package or as customers’ request
Delivery Period:	5-8 Work Days
Payment Method:	T/T,Western Union
Supply Capacity:	10000 pcs/month

Detail Information

Product Description

Detail Information

Place of Origin

China

Brand Name

Certification

ISO/TS16949

Model Number

Toyota 15B 4.1L Diesel Dyna Coaster

OEM Part Number:

11115-58140

Engine Compatibility:

Toyota 15B, 15B-F, 15B-FT, 15B-FTE (4.1L / 4,104 Cc Inline-4 Diesel)

Bore Diameter:

108.0 Mm

Gasket Diameter:

109.5 Mm

Compressed Thickness:

1.3 Mm

Gasket Width:

197 Mm

Gasket Length:

503 Mm

Gasket Type:

Multi-Layer Steel (MLS)

Highlight:

1.3mm MLS cylinder head gasket

Toyota 15B diesel engine gasket

4.1L multi-layer steel head gasket

Product Description

Cylinder Head Gasket 11115-58140 For Toyota 15B 4.1L Diesel Dyna Coaster

Product Overview

The cylinder head gasket carrying Toyota OEM number 11115-58140 (also 1111558140) seals the critical interface between the cylinder head and engine block on Toyota's high-durability 15B series 4.1L inline-four diesel engine. This is the 1.3mm thickness grade in Toyota's multi-thickness system for the 15B engine family, required when piston protrusion measurements call for this medium thickness.

Part Number: 11115-58140

Product Name: Cylinder Head Gasket

Car Model: Toyota Dyna Coaster

Engine Model: Toyota 15B 4.1L Diesel

Condition: 100% Brand New

Origin: China Mainland

Main Market: Middle East, Asia, Africa, South America, North America & Europe

Quality Standard: OEM equivalent / ISO quality control

Thickness Grades - 15B Diesel Family

The Toyota 15B diesel engine uses three different head gasket thickness grades depending on piston protrusion measurement - the distance each piston rises above the cylinder block deck at Top Dead Center (TDC). The correct thickness is determined by the highest protrusion measurement across all four cylinders.

OE Number	Thickness	Notes
11115-58130	1.20 mm	Thinnest - for lowest piston protrusion
11115-58140	1.30 mm	Medium thickness - this product
11115-58150	1.40 mm	Thickest - for highest piston protrusion

Additionally, Toyota also offers the 1.3 mm grade with the suffix "-41" as 11115-58141, which is interchangeable and cross-referenced with this gasket.

Important: Selecting the incorrect thickness will alter the compression height, affecting compression ratio and potentially leading to compression loss or reduced engine performance. For the 15B family, the 14B head gasket (108 mm bore) is not interchangeable - the 15B gasket has different coolant passage holes and a 108 mm piston diameter (versus 102 mm for the 14B). Always confirm your engine code before ordering.

Applications

This Toyota 15B cylinder head gasket 11115-58140 directly replaces the factory sealing component in the following configurations:

Coaster Bus (B40 / B50 Series)

Chassis	Model	Years	Engine Variant
B40 / B50	Toyota Coaster	1995-2006	15B-FT (4.1 TD)

Dyna / ToyoAce Commercial Chassis

Chassis	Model	Years	Engine Variant
BU212, BU102, BU112, BU142, BU222	Toyota Dyna 200 (Platform/Chassis)	1995-2003	15B-F / 15B-FT
BU62-BU96 (various)	Toyota Dyna / ToyoAce	1995-2005	15B-FTE

Mega Cruiser Off-Road Vehicle

Chassis	Model	Years	Engine Variant
BXD20	Toyota Mega Cruiser (4WD)	1999-2001	15B-FT

Additional vehicle configurations: Forklift, excavator, and industrial equipment applications powered by the 15B engine.

Features & Benefits

Multi-Layer Steel (MLS) Construction: Manufactured from multiple precision-stamped embossed layers of stainless steel with elastomer coating for heavy-duty diesel durability
1.3 mm Thickness: Medium option in the 15B family, identified by OE number 11115-58140
Precision 109.5 mm Gasket Bore: Designed specifically for 15B's 108 mm cylinder bore
OE-Grade Replacement: Exact Toyota part number for 15B-FT engines in Dyna, Coaster, and Mega Cruiser vehicles
Extended Cross-Reference Coverage: Compatible with GLASER H84803-10, AJUSA 101481, and ELRING equivalents
Proven Performance: Reliably seals high-compression 15B diesel cycles (17.8-18.4:1 compression ratio)
Quality Certified: Manufactured under IATF 16949 and ISO 9001 certified quality management systems

Quality Control & Verification

QC Item	Verification Method
Fire ring bore alignment	Laser measurement - 109.5 mm ±0.05 mm tolerance
Gasket thickness (compressed)	Digital micrometer - verified against 1.30 mm ±0.02 mm specification
Layer registration	Optical inspection - all MLS layers align within 0.2 mm
Fire ring material	Spectrographic analysis - stainless steel grade confirmed
Elastomer coating integrity	Visual and adhesion test - no voids, cracks, or missing coating
Full dimensional inspection	CMM measurement - verified against 15B OE blueprint
Anti-corrosion treatment	VCI (Vapor Corrosion Inhibitor) sealed bag

Installation & Maintenance Recommendations

⚠️ IMPORTANT: The 15B engine uses torque-to-yield (stretch) cylinder head bolts. These are single-use fasteners and must be replaced with new units whenever the cylinder head is removed. Reusing old bolts risks uneven clamping, head gasket failure, and cylinder head warping.

Why thickness selection matters: The 15B is a high-compression diesel engine (17.8-18.4:1). The correct head gasket thickness is determined by piston protrusion - the distance each piston rises above the cylinder block deck at Top Dead Center (TDC).

Recommended Replacement Indicators

Symptom	Diagnosis
Gradual coolant loss with no visible external leak	Coolant escaping past fire ring into combustion chamber
White or grey steam from exhaust that continues after engine is warm	Coolant burning in combustion chamber - head gasket breach
Bubbles in coolant overflow bottle with engine running	Combustion gases entering cooling system
Pressure in cooling system - hoses remain hard even when cold	Combustion gases pressurising cooling system
Milky oil residue under filler cap or on dipstick	Coolant mixed with engine oil - internal gasket failure
Engine overheating without clear cause	Combustion gases interfering with coolant flow

Procedural Notes

Select correct gasket thickness based on piston protrusion measurement
Always replace cylinder head bolts with new genuine-spec bolts
Check cylinder head and block surfaces for warpage using precision straight edge
Install the gasket dry - no additional sealants required
Replace timing components as applicable when front cover is removed
Flush the cooling system and fill with fresh coolant
Consider professional installation - requires specialized tools and 8-10 hours labor

Maintenance Schedule

Service Item	Interval
Replace engine coolant	Every 4-5 years or 80,000-100,000 km
Check for coolant loss and pressurised hoses	Monthly
Address any overheating event	Immediately
Inspect valve clearances	Every 50,000 km

Packaging & Supply

Individual packaging: Sealed in anti-static VCI bag, foam-lined carton
Carton dimensions: Approximately 52 × 21 × 2 cm
Net weight: Approximately 0.35-0.45 kg
Master carton: 50 units per export carton
Lead time: 3-7 working days for stock orders
Minimum order quantity: 1 piece (sample available)
Shipping methods: FedEx, UPS, DHL for samples; sea freight for bulk
H/S Code: 8484.10

Note: For workshops performing full top-end service, matching 15B cylinder head bolts, valve stem seal sets, rocker cover gaskets, and full overhaul gasket sets are also available.

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1.3mm Thickness Multi-Layer Steel (MLS) Cylinder Head Gasket for Toyota 15B 4.1L Diesel Engine

MOQ:	10 pcs
Price:	Negotiable
Standard Packaging:	Neutral Package or as customers’ request
Delivery Period:	5-8 Work Days
Payment Method:	T/T,Western Union
Supply Capacity:	10000 pcs/month

Detail Information

Product Description

Detail Information

Place of Origin

China

Brand Name

YIMI

Certification

ISO/TS16949

Model Number

Toyota 15B 4.1L Diesel Dyna Coaster

OEM Part Number:

11115-58140

Engine Compatibility:

Toyota 15B, 15B-F, 15B-FT, 15B-FTE (4.1L / 4,104 Cc Inline-4 Diesel)

Bore Diameter:

108.0 Mm

Gasket Diameter:

109.5 Mm

Compressed Thickness:

1.3 Mm

Gasket Width:

197 Mm

Gasket Length:

503 Mm

Gasket Type:

Multi-Layer Steel (MLS)

Minimum Order Quantity:

10 pcs

Price:

Negotiable

Packaging Details:

Neutral Package or as customers’ request

Delivery Time:

5-8 Work Days

Payment Terms:

T/T,Western Union

Supply Ability:

10000 pcs/month

Highlight

1.3mm MLS cylinder head gasket

Toyota 15B diesel engine gasket

4.1L multi-layer steel head gasket

Product Description

Cylinder Head Gasket 11115-58140 For Toyota 15B 4.1L Diesel Dyna Coaster

Product Overview

Part Number: 11115-58140

Product Name: Cylinder Head Gasket

Car Model: Toyota Dyna Coaster

Engine Model: Toyota 15B 4.1L Diesel

Condition: 100% Brand New

Origin: China Mainland

Main Market: Middle East, Asia, Africa, South America, North America & Europe

Quality Standard: OEM equivalent / ISO quality control

Thickness Grades - 15B Diesel Family

OE Number	Thickness	Notes
11115-58130	1.20 mm	Thinnest - for lowest piston protrusion
11115-58140	1.30 mm	Medium thickness - this product
11115-58150	1.40 mm	Thickest - for highest piston protrusion

Additionally, Toyota also offers the 1.3 mm grade with the suffix "-41" as 11115-58141, which is interchangeable and cross-referenced with this gasket.

Applications

This Toyota 15B cylinder head gasket 11115-58140 directly replaces the factory sealing component in the following configurations:

Coaster Bus (B40 / B50 Series)

Chassis	Model	Years	Engine Variant
B40 / B50	Toyota Coaster	1995-2006	15B-FT (4.1 TD)

Dyna / ToyoAce Commercial Chassis

Chassis	Model	Years	Engine Variant
BU212, BU102, BU112, BU142, BU222	Toyota Dyna 200 (Platform/Chassis)	1995-2003	15B-F / 15B-FT
BU62-BU96 (various)	Toyota Dyna / ToyoAce	1995-2005	15B-FTE

Mega Cruiser Off-Road Vehicle

Chassis	Model	Years	Engine Variant
BXD20	Toyota Mega Cruiser (4WD)	1999-2001	15B-FT

Additional vehicle configurations: Forklift, excavator, and industrial equipment applications powered by the 15B engine.

Features & Benefits

Multi-Layer Steel (MLS) Construction: Manufactured from multiple precision-stamped embossed layers of stainless steel with elastomer coating for heavy-duty diesel durability
1.3 mm Thickness: Medium option in the 15B family, identified by OE number 11115-58140
Precision 109.5 mm Gasket Bore: Designed specifically for 15B's 108 mm cylinder bore
OE-Grade Replacement: Exact Toyota part number for 15B-FT engines in Dyna, Coaster, and Mega Cruiser vehicles
Extended Cross-Reference Coverage: Compatible with GLASER H84803-10, AJUSA 101481, and ELRING equivalents
Proven Performance: Reliably seals high-compression 15B diesel cycles (17.8-18.4:1 compression ratio)
Quality Certified: Manufactured under IATF 16949 and ISO 9001 certified quality management systems

Quality Control & Verification

QC Item	Verification Method
Fire ring bore alignment	Laser measurement - 109.5 mm ±0.05 mm tolerance
Gasket thickness (compressed)	Digital micrometer - verified against 1.30 mm ±0.02 mm specification
Layer registration	Optical inspection - all MLS layers align within 0.2 mm
Fire ring material	Spectrographic analysis - stainless steel grade confirmed
Elastomer coating integrity	Visual and adhesion test - no voids, cracks, or missing coating
Full dimensional inspection	CMM measurement - verified against 15B OE blueprint
Anti-corrosion treatment	VCI (Vapor Corrosion Inhibitor) sealed bag

Installation & Maintenance Recommendations

Recommended Replacement Indicators

Symptom	Diagnosis
Gradual coolant loss with no visible external leak	Coolant escaping past fire ring into combustion chamber
White or grey steam from exhaust that continues after engine is warm	Coolant burning in combustion chamber - head gasket breach
Bubbles in coolant overflow bottle with engine running	Combustion gases entering cooling system
Pressure in cooling system - hoses remain hard even when cold	Combustion gases pressurising cooling system
Milky oil residue under filler cap or on dipstick	Coolant mixed with engine oil - internal gasket failure
Engine overheating without clear cause	Combustion gases interfering with coolant flow

Procedural Notes

Select correct gasket thickness based on piston protrusion measurement
Always replace cylinder head bolts with new genuine-spec bolts
Check cylinder head and block surfaces for warpage using precision straight edge
Install the gasket dry - no additional sealants required
Replace timing components as applicable when front cover is removed
Flush the cooling system and fill with fresh coolant
Consider professional installation - requires specialized tools and 8-10 hours labor

Maintenance Schedule

Service Item	Interval
Replace engine coolant	Every 4-5 years or 80,000-100,000 km
Check for coolant loss and pressurised hoses	Monthly
Address any overheating event	Immediately
Inspect valve clearances	Every 50,000 km

Packaging & Supply

Individual packaging: Sealed in anti-static VCI bag, foam-lined carton
Carton dimensions: Approximately 52 × 21 × 2 cm
Net weight: Approximately 0.35-0.45 kg
Master carton: 50 units per export carton
Lead time: 3-7 working days for stock orders
Minimum order quantity: 1 piece (sample available)
Shipping methods: FedEx, UPS, DHL for samples; sea freight for bulk
H/S Code: 8484.10

Note: For workshops performing full top-end service, matching 15B cylinder head bolts, valve stem seal sets, rocker cover gaskets, and full overhaul gasket sets are also available.

Tags: