Discover the authentic Donaldson P163681 Head Assembly HMK04—a brand new, high-quality replacement component specifically engineered for HMK04 Duramax engines. Built with precision and backed by over 35 years of industry expertise, this genuine part is designed to deliver lasting performance and reliability for your heavy-duty applications. Whether you’re shopping for the Donaldson P163681 head assembly online or ordering the Donaldson HMK04 head assembly directly, you can rest assured it meets the highest standards of quality and efficiency.

Key Benefits

• Typically ships within one business day for fast delivery
• Brand-new, genuine Donaldson quality for dependable performance
• No minimum order requirements, making it accessible for every customer

Compatible Replacements

• Replaces: P163681, P163419, P164381, P164378, 1G-8878
• Engineered for a perfect fit with your Duramax systems
• Ideal for both regular maintenance and emergency repairs

Engine Compatibility & Application

• Exclusively designed for HMK04 Duramax engines to enhance durability
• Perfect for heavy-duty applications that require top performance
• Boosts engine efficiency and supports long-term reliability

For installation tips and improved performance, follow our recommended maintenance practices to extend the life of your Duramax engine. Ready to upgrade today? Explore our Donaldson Collection to ensure you purchase only the best parts and experience the Everything Truck Parts difference. Now is the perfect time to secure your genuine Donaldson head assembly—invest in quality and performance that lasts.