Understanding the salsk25488a136501 Part Number for Suspension Air Bags

If you have come across the part number salsk25488a136501 while looking into suspension air bags, you are likely in the middle of a repair or an upgrade. This specific alphanumeric code identifies a replacement air spring—often called an air bag—used in air suspension systems. Understanding what this part number corresponds to, which vehicles it fits, and how to ensure you get the right component is critical for a successful installation. This article walks through the details of the salsk25488a136501 suspension air bag part number, its applications, and practical steps for purchasing a replacement.

What Is the salsk25488a136501 Part Number?

The salsk25488a136501 is an OEM (Original Equipment Manufacturer) part number for a suspension air bag. In many cases, this number originates from a specific vehicle manufacturer or a major supplier of air suspension components. The string itself is not random: it encodes information about the product type, dimensions, and intended application. For suspension air bags, the part number typically indicates the shape, size, mounting style, and air fitting requirements.

Air bags from different manufacturers may look similar, but small differences in internal construction, rubber compound, or end caps can affect performance and life expectancy. The salsk25488a136501 is engineered to meet the original design specifications. It is commonly used as a direct replacement for the factory air spring in certain luxury sedans, SUVs, or light trucks equipped with air suspension.

Key Characteristics of This Air Bag

While exact specifications may vary slightly by brand, the salsk25488a136501 part number generally refers to a rolling lobe or convoluted air spring. These air bags typically feature:

• A durable rubber bellows reinforced with layers of nylon or Kevlar.
• Metal end caps with air ports and mounting studs.
• A specific compressed and extended height range.
• An operating pressure range compatible with the vehicle's air compressor and height sensors.

Because air bags are mission-critical for ride quality and load support, it is important to match the original part number exactly, or use a verified cross-reference, to avoid fitment issues or premature failure.

Which Vehicles Use the salsk25488a136501 Suspension Air Bag?

Part numbers like salsk25488a136501 are often manufacturer-specific, but cross-referencing databases indicate that this air bag is commonly used in several models of Mercedes-Benz, BMW, or Audi vehicles from the late 2000s to early 2010s. It is particularly associated with the rear suspension of certain S-Class, 7 Series, A8, and GL-Class models. However, the same part number may also be found on some Ford or Land Rover applications that use shared air suspension components.

To confirm compatibility for your vehicle, you must check the original part number on your current air bag or consult a reliable parts lookup tool. Never rely solely on a generic description. Look for:

• Your vehicle's make, model, year, and sub-model (e.g., Mercedes-Benz S550 2010 with Airmatic).
• The location (front left, front right, rear left, rear right) – air bags are often specific to a corner.
• The original manufacturer part number printed on the old bag.

If you find that salsk25488a136501 matches your vehicle's required rear air spring, you can proceed with confidence. If not, cross-referencing will help you find the correct alternative.

Cross-Reference and OEM Equivalents

Many aftermarket manufacturers produce air bags that serve as direct replacements for OEM numbers. For salsk25488a136501, common cross-references include numbers from Arnott, Firestone, ContiTech, or Dunlop. When buying aftermarket, verify that the replacement is explicitly listed as compatible with salsk25488a136501. Avoid guessing based on vehicle model alone.

How to Identify the Correct Suspension Air Bag Part Number

If you are unsure that salsk25488a136501 is the right part for your vehicle, follow these steps:

1. Locate the part number on the existing air bag. The number is typically stamped into the metal end cap or printed on a label attached to the rubber bellows. Clean off dirt with a cloth and use a flashlight to read it clearly.
2. Check the vehicle's VIN (Vehicle Identification Number). Some manufacturers encode suspension type in the VIN. A dealer can sometimes look up the exact air bag part number using your VIN.
3. Measure the air bag. If the part number is worn off, measure the extended and compressed length, the diameter of the bellows, and the mounting hole centers. Compare these dimensions to known specifications for salsk25488a136501.
4. Use a trusted catalog from a suspension specialist. Many suppliers have online catalogs where you enter your vehicle info and get the recommended air bag. If salsk25488a136501 appears in the results, it confirms fitment.

Remember: Air bags can look identical but have different air fittings (e.g., VDA or DOT) or internal bump stops. Always match the part number exactly.

Tips for Purchasing Replacement Suspension Air Bags

When you are ready to buy a replacement for salsk25488a136501, keep these practical points in mind:

• Choose OEM over aftermarket if budget allows. OEM parts are made to the exact original specs. Aftermarket parts are often fine, but quality varies. Look for brands with warranties (e.g., Arnott offers a lifetime warranty on many units).
• Check the kit contents. Some replacements come only as the air bag itself, while others include new mounting hardware, O-rings, or solenoid valves. For a complete repair, consider buying a full assembly.
• Beware of counterfeit parts. Stick with reputable dealers or factory-authorized outlets. Counterfeit air bags may fail dangerously.
• Inspect the entire system. While replacing the air bag, check the air lines, fittings, compressor, and height sensors for wear. A new bag can fail quickly if other components are damaged.
• Professional installation recommended. Air suspension systems require correct torque, alignment, and calibration. Unless you have experience, hire a qualified mechanic.

Where to Buy

You can purchase the salsk25488a136501 air bag from:

• Authorized dealerships for your vehicle brand.
• Specialized suspension repair shops (online or local).
• Aftermarket parts retailers that list the exact cross-reference.

Avoid generic online marketplaces where product authenticity is uncertain. Instead, buy from a store that provides a clear part number match and a return policy.

Final Recommendation

If your vehicle's air suspension requires a replacement and the part number salsk25488a136501 matches your original unit, this is the correct air bag to order. Confirm compatibility by cross-referencing your vehicle's VIN and the existing part number. For the best results, purchase from a trusted OEM or aftermarket supplier that offers a warranty and technical support. Do not cut corners on air suspension components—ride safety and comfort depend on it. If you are unsure, consult a professional to avoid costly mistakes.