This identical oil fill and check tube, tailored for the ISB series, maintains the same specifications as the previous model with a 1-inch diameter, 0.07-inch wall thickness, and 28.68-inch length. Its black painted exterior resists corrosion, ensuring longevity in challenging environments. Designed for precise fit and ease of use, it supports routine oil level inspections and refills, critical for engine durability. Proper lubrication is fundamental to engine efficiency and avoiding costly repairs, making this component indispensable. Its steel construction guarantees strength and resilience against operational stresses. Easy to install and reliable in function, this tube ensures your engine remains properly lubricated during demanding work cycles. Source One Parts Center is your trusted source for high-quality, dependable heavy-duty truck parts.