Frequently Asked Questions About Hino 238-338 Truck Shock Absorbers

Will these shock absorbers fit my specific Hino 238 or 338 model year?

Our shock absorbers are designed to fit Hino 238 and 338 series trucks from 2005 to 2018. However, there are variations between cab configurations (standard cab vs. crew cab) and wheelbase lengths that may affect fitment. We recommend checking your truck's VIN and comparing the OEM part numbers listed in each product description. If you're unsure, contact our support team with your truck's year, model, and VIN for verification.

What's the difference between gas-charged and hydraulic shock absorbers for my Hino truck?

Gas-charged shocks use nitrogen gas to reduce foaming and maintain consistent damping performance, especially under heavy loads or frequent stop-and-go conditions. They typically last longer and provide better stability. Hydraulic shocks are more affordable and work well for lighter duty applications or trucks that aren't constantly loaded. For Hino 238-338 trucks used in delivery or construction, we generally recommend gas-charged shocks for the best performance and longevity.

Can I install these shock absorbers myself, or do I need special tools?

Installation typically requires basic hand tools including wrenches, sockets, and potentially a spring compressor for certain models. Most experienced DIY mechanics can complete the job in 2-3 hours. The main challenges include safely supporting the truck, dealing with corroded mounting bolts, and properly torquing the new hardware to specification (usually 65-85 ft-lbs for upper mounts, 100-120 ft-lbs for lower mounts). Always replace shocks in pairs per axle for balanced handling.

How long should shock absorbers last on my Hino 238 or 338?

Under normal commercial use, quality shock absorbers typically last 50,000 to 75,000 miles on Hino medium-duty trucks. However, this varies significantly based on load conditions, road quality, and driving habits. Signs you need replacement include excessive bouncing, nose-diving during braking, uneven tire wear, or visible oil leaking from the shock body. Fleet operators often replace shocks preventatively every 60,000 miles to avoid unexpected failures.

What's the difference between OEM and aftermarket shock absorbers?

OEM shocks are built to original factory specifications and typically cost 40-60% more than quality aftermarket options. Aftermarket brands like Monroe, Gabriel, and Bilstein often offer upgraded features such as improved valving or heavier-duty construction at competitive prices. For Hino 238-338 trucks, aftermarket shocks can provide equal or better performance than OEM, especially if you choose heavy-duty or gas-charged models designed for commercial applications. Always verify the warranty coverage, which ranges from 1 year to lifetime depending on the manufacturer.