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Exhaust Manifold Gasket 12420484 (For MWM TBG620 V16 Unit No.6002)

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Exhaust Manifold Gasket 12420484 (For MWM TBG620 V16 Unit No.6002)
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Features
Specifications
Structure: MLS Multi-layer Steel Gasket With Integrated Sealing Beads
Free Thickness: 1.6 Mm (tolerance ±0.05 Mm)
Inner Flow Profile: Matches Cylinder Head Exhaust Port Exactly
Fixing Bolt Holes: OEM Standard Layout & Aperture
Outer Shape: One-piece Integrated Flange Gasket
Rebound After Compression: ≥0.28 Mm
Basic Infomation
Place of Origin: Germany
Brand Name: MWM DEUTZ
Model Number: 12420484
Payment & Shipping Terms
Packaging Details: Original packaging
Delivery Time: 15days
Payment Terms: D/P,T/T,Western Union
Supply Ability: 9999
Product Description

1. Basic Fitment Info

OE Part No.: 12420484

Product Name: MLS Exhaust Manifold Seal Gasket

Applicable Unit: DEUTZ MWM TBG620 V16 Gas Generator Set (Unit Code:6002)

Mounting Position: Joint face between cylinder exhaust flange and exhaust manifold

Positioning: OEM direct replacement seal part, fully matched contour & bolt holes, no modification required.

2. Operating Condition Limits

Continuous exhaust temp: 450～620℃; instantaneous peak temp ≤680℃

Exhaust back pressure: 18～32kPa

Unit vibration: axial ±6.5 mm, radial ±4 mm, frequent thermal cycling

Medium: high-temperature flue gas, sulfide exhaust gas, acidic condensed vapor & thermal radiation

Interchangeable for left & right manifolds on single V16 unit.

3. Dimension & Structural Parameters

表格



Item Technical Data Description
Structure MLS multi-layer steel gasket with integrated sealing beads High temp resistant, stable resilience
Free thickness 1.6 mm (tolerance ±0.05 mm) Design crush allowance:0.35~0.45 mm
Inner flow profile Matches cylinder head exhaust port exactly No flow restriction
Fixing bolt holes OEM standard layout & aperture Direct alignment without reaming
Outer shape One-piece integrated flange gasket No segmented leakage gap
Rebound after compression ≥0.28 mm Sustained sealing pressure after thermal relaxation

4. Material & Temperature Resistance

Layer Construction

  1. Surface layer: flexible expanded graphite sheet, acid resistant, adapts to minor flange flatness deviation
  2. Core layers: 3-ply stamped 301 stainless steel with embossed sealing beads
  3. Anti-corrosion coating: high temp inorganic coating against oxidation & delamination

Thermal Performance

  • Continuous service temp: ≤620℃ stable sealing
  • Instant thermal shock limit: 680℃ short-term exposure, no burn-through or delamination
  • Low temp range: -40℃ to ambient temp, no cracking or graphite peeling

Sealing Performance

Minimum sealing surface pressure ≥32 MPa

Helium leak rate ≤1×10⁻⁷ Pa·m³/s

Permanent compression set ≤8% after 40,000 running hours

Resists sulfide corrosion from natural gas combustion exhaust.

5. Core Functions for TBG620 V16 Unit

  1. Gas Tight Isolation: Prevents high-temp exhaust leakage, protects wiring harness & rubber hoses from radiant heat fire hazard.
  2. Stable Backpressure: Balanced cylinder exhaust pressure, steady turbo speed, constant unit output power and normal gas consumption.
  3. Thermal & Vibration Compensation: Elastic steel beads absorb thermal expansion difference and continuous vibration to avoid seal failure.
  4. Flange Protection: Evenly distributes bolt clamping force to prevent indentation damage on cast iron flanges.

6. Installation Instructions

  1. Install with OEM marked orientation, reverse mounting forbidden;
  2. Fully remove old gasket residue, carbon deposit and rust; flange flatness ≤0.06 mm;
  3. Tighten bolts diagonally in 3 stages:

    Pre-torque:40 N·m → Intermediate torque:75 N·m → Final torque:110～120 N·m
  4. Retighten final torque after 2 hours cold startup operation;
  5. Do not apply liquid sealant, excess glue causes over-compression and gasket extrusion;
  6. Replace with new gasket unconditionally once manifold is disassembled; reuse prohibited.

7. Replacement Criteria

Replace gasket 12420484 if any issue occurs:
  1. Graphite layer burnt, steel layer perforated, delamination or flattened sealing beads;
  2. Audible exhaust hissing, local flange overheating and red hot;
  3. Individual cylinder exhaust temperature abnormal, power derate and frequent unit alarms;
  4. Adjacent hoses/wiring baked and carbonized by leaked hot gas;
  5. Torque retightening fails to eliminate persistent leakage.

8. Endurance Standard

Design service life: ≥40,000 running hours / 5 years

1,500 start-stop thermal cycles without sealing degradation

Acid condensed water immersion resistant, no pitting corrosion

Mandatory renewal during exhaust system overhaul or cylinder head disassembly.
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