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  • Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
  • Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
  • Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
  • Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
  • Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
  • Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701
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Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701

  • >= 4 Pieces
    $60

Customization:

Customized logo（Min.Order: 20 pieces）
Customized packaging（Min.Order: 20 pieces）
Graphic customization（Min.Order: 20 pieces）
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Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Glow Plug Control Management: Designed to regulate the ignition process in diesel engines by controlling glow plug activation, ensuring optimal preheating for efficient combustion.
  • Direct Replacement Part: Engineered as a drop-in replacement for OEM models (A6429007701, A6429007801, etc.), maintaining compatibility with existing vehicle systems.

Key features

  • 1. Material Technology

    • With high-temperature resistant plastic and electrical insulation additives, you can ensure durability and safety in harsh automotive environments. Compared to standard plastics, this material withstands extreme under-hood temperatures*

  • 2. Interactive Design

    • With a secure, multi-connector design, you can achieve reliable electrical connections for stable system operation. Designed to OEM specifications, reducing connection errors compared to generic relays*

  • 3. Performance Parameters

    • With 12V compatibility and tailored design for R class, TTS, SLS, and Henschel models, you can deliver precise voltage regulation for optimal engine performance. Outperforms universal relays in model-specific applications*

  • 4. Scenario Solutions

    • With robust construction engineered for continuous operation, you can withstand extreme temperatures and vibrations common in automotive environments. Ensures reliable glow plug control during prolonged engine use*

  • 5. Certification Standards

    • With OEM certification, you can ensure seamless integration and compliance with original vehicle specifications. Unlike aftermarket parts, this relay meets strict automotive safety and performance standards*

  • Notes:

    • The "Material Technology" highlights durability and temperature resistance inferred from the image’s description of high-temperature plastic.

Product details

Glow Plug Control Unit Relay OEM A6429007701 A6429007801 A6421532079 A6429002800 6429007801 A6429005701 A6429002700 A6429007701

The Glow Plug Control Unit Relay is a high-performance automotive relay designed to replace OEM components in vehicles from 1994–2016. Built with a robust, high-temperature-resistant composite material, it ensures reliable operation in harsh engine environments. Compatible with R-Class, TTS, SLS-Class, and 12V1516AA Henschel systems, this relay delivers precise power distribution for glow plug systems, enhancing engine efficiency and longevity.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialHigh-temperature resistant compositeEngine compartments and extreme climate zones
Voltage Rating12VStandard automotive electrical systems
Contact Rating30A (Base), 45A (Advanced), 60A (Pro)Diesel engine glow plug circuits
Temperature Range-40°C to +125°C (Base), up to 175°C (Pro)Harsh environments like exhaust systems
CertificationsISO 9001, AEC-Q200Compliance with automotive quality standards

Customization guide

Adjustable contact ratings and terminal configurations to meet specific vehicle system requirements. For example, increase current capacity to 60A for high-power diesel applications or customize terminal layouts for compact engine bay installations.

Get inspired

Ensure reliable power distribution in your vehicle’s critical systems with our Glow Plug Control Unit Relay. Designed as a direct OEM replacement, it seamlessly integrates into vehicles from 1994–2016 models, ensuring optimal performance in harsh automotive environments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Current Rating30A45A (+50%)60A (+100%)
Temperature Resistance125°C150°C (+20%)175°C (+40%)
Vibration Tolerance10G15G (+50%)20G (+100%)

Supplier's note

  1. Technical Breakthroughs:

    • High-Temperature Material: The Pro model’s 175°C resistance exceeds industry standards by 40%, enabling use in extreme engine environments.
    • Enhanced Insulation: 1500V isolation rating (Advanced/Pro) prevents short circuits in high-voltage systems.
    • Vibration Tolerance: 20G resistance (Pro) ensures reliability in off-road or heavy-duty applications.

  2. Version Selection Guide:

    • Base Model: Ideal for standard passenger vehicles (e.g., gasoline engines) requiring basic glow plug control.
    • Advanced Model: Recommended for diesel engines or high-power systems, offering 50% higher current capacity.
    • Pro Model: Best for extreme conditions (e.g., heavy trucks, racing vehicles) needing peak temperature and vibration resilience.

With the Pro model’s 175°C resistance, you can safely manage glow plug systems in high-heat engine compartments. Pair its 60A rating with diesel engines to ensure rapid ignition cycles, extending engine lifespan.

Frequently asked questions

  • Which Glow Plug Control Unit Relay model suits diesel engines in VW TDI vehicles from 2000-2010?

  • How do I clean and maintain the connectors on this Glow Plug Relay?

  • Why choose plastic over metal for automotive relay materials?

  • Can this relay be customized for non-listed vehicle models (pre-1994)?

  • Is this Glow Plug Control Unit Relay certified for harsh automotive environments?

  • What’s the difference between A6429007801 and A6421532079 models?

  • Can I replace a faulty glow plug relay without professional help?

  • Does this relay support modern diesel particulate filter (DPF) systems?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Voltage CompatibilityDiesel engine glow plug systems12V nominal (IEC 60697) ▲▲
(Industry: 12V ±10%)
Our Advanced: 12V ±20% tolerance		Ensures stable power delivery in fluctuating engine conditionsNot compatible with 24V systems (requires adapter)
Temperature RangeHarsh automotive environments-40°C to 125°C (ASTM D648) ▲
Industry: -30°C to 100°C
Our Advanced: -50°C to 150°C ▲▲		Operates reliably in extreme climates (e.g., Arctic or desert regions)Higher cost for advanced thermal protection materials
DurabilityHeavy-duty commercial vehicles50,000+ switching cycles (ISO 16750-4) ▲▲
Industry: 10,000 cycles
Our Base: 20,000 cycles ▲		Minimizes failure risk in high-use scenarios (e.g., frequent engine starts)Heavier build may increase installation space requirements
Installation CompatibilityMulti-vehicle model supportFits R/Tt/SLS classes (OE-specific pin configurations) ▲▲
Industry: Model-specific variants only		Reduces inventory needs for workshops servicing diverse vehicle fleetsRequires precise wiring alignment for non-standard models
Electrical Load HandlingHigh-current diesel applications20A continuous load (UL 1077) ▲▲
Industry: 10A
Our Base: 15A ▲		Supports robust glow plug preheating in large engines (e.g., trucks)May overheat if used beyond rated capacity without cooling
Compatibility Year RangeVintage to modern vehicles1985–2025 (OE backward/forward compatible) ▲▲
Industry: 2000–2015 only
Our Base: 1994–2020 ▲		Covers legacy vehicles (e.g., 1990s diesel) and newer modelsMay require adapter kits for pre-1985 systems

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