Genuine OEM 1179970982 - Vacuum Hose

Product Overview

This Genuine OEM 1179970982 vacuum hose is engineered for Mercedes-Benz CLK-Class, ML-Class, and R-Class models from 1998 to 2007. The hose connects critical vacuum-operated components in the engine bay, including brake boosters, emissions control systems, and HVAC blend doors. Factory-original fitment ensures proper system function and reliability across your vehicle's vacuum network.

This vacuum hose is sold individually. Verify the correct routing and diameter for your specific model before ordering.

Cross Reference Numbers

This Genuine OEM 1179970982 is equivalent to or replaces the following part numbers: 117-997-09-82, 1179970982.

Vehicle Compatibility

This part fits the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.

• Mercedes-Benz CLK320 3.2 V6 Gas (W208): 1998–2001
• Mercedes-Benz CLK430 4.3 V8 Gas (W208): 1999–2001
• Mercedes-Benz CLK55 AMG 5.5 V8 Gas (W208): 2001
• Mercedes-Benz ML320 3.2 V6 Gas (W163): 1998–2001
• Mercedes-Benz ML430 4.3 V8 Gas (W163): 1999–2001
• Mercedes-Benz ML500 5.0 V8 Gas (W163): 2002–2005
• Mercedes-Benz ML55 AMG 5.5 V8 Gas (W163): 2000–2003
• Mercedes-Benz ML350 3.7 V6 Gas (W163): 2003–2005
• Mercedes-Benz R500 5.0 V8 Gas (W251): 2006–2007

This may also fit other applications. Please use the vehicle selector tool to verify fitment.

Often Replaced Together

For a complete vacuum system service, many owners replace the following at the same time:

• Vacuum hose clamps and connectors
• Check valve or one-way valve if integrated into the hose assembly
• Brake booster (if vacuum leaks are suspected)
• PCV hoses and crankcase breather components

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Frequently Asked Questions

How do I know if my Mercedes-Benz CLK or ML-Class vacuum hose needs replacement?

Common signs of a failing vacuum hose include a soft hissing sound from the engine bay, rough idle, difficulty engaging the parking brake, unresponsive HVAC blend door operation, or a check engine light related to emissions control. Inspect hoses visually for cracks, splits, brittleness, or separation from connectors. Hoses degrade over time due to heat and engine oil exposure, so replacement is part of routine maintenance on vehicles over 15 years old.

What is the purpose of this vacuum hose in my vehicle?

Vacuum hoses distribute engine vacuum to multiple systems: the brake booster (which amplifies pedal pressure), emissions control valves (EGR, charcoal canister purge), HVAC blend door actuators, and other vacuum-operated accessories. A single hose may serve one component or act as a manifold connecting several. This part number is designed for the specific routing and diameter required by your Mercedes-Benz model year.

Can I repair a cracked vacuum hose with tape or sealant?

Temporary tape or sealant repairs may buy time, but they do not restore the hose to factory integrity. Vacuum leaks will persist and worsen, leading to drivability issues and potential damage to connected components. Factory replacement hoses are inexpensive insurance against compounding problems. Replace rather than repair for reliability and peace of mind.

How do I install this vacuum hose on my Mercedes-Benz?

Locate the hose routing diagram in your owner's manual or service documentation. Disconnect the old hose from both ends, noting the original path. Install the new hose by pressing it firmly onto each connector until seated. Ensure the hose does not contact hot surfaces, sharp edges, or moving engine components. Test idle and brake booster operation after installation. If you are unfamiliar with engine bay work, consult a professional technician.

Are there different vacuum hose diameters for different Mercedes-Benz models?

Yes. Vacuum hoses come in several diameters (typically 3/16", 1/4", and 5/16") depending on the application and component being served. This part number is specific to your model and engine combination. Always verify fitment using the vehicle selector tool to ensure you receive the correct diameter and length for your vehicle.

Should I replace all vacuum hoses at once or only the leaking one?

If only one hose is visibly damaged or leaking, replacement of that hose alone is acceptable. However, if your vehicle is older (10+ years), consider inspecting all hoses for signs of age-related deterioration. Replacing multiple hoses during a single service visit reduces labor costs compared to multiple future repairs. Consult your technician for a full vacuum system inspection.

Order Genuine OEM 1179970982 today. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your Mercedes-Benz.

Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.