Product Overview

 

Premium OEM-Grade Vacuum Pump Return Hose - Designed to Restore Your Isuzu Truck's Vacuum System Performance, Ensure Stable Lubrication, and Withstand Heavy-Duty Operating Conditions. Perfectly Compatible with 4JB1-T1/4KH1CT5H1 Engines, Directly Replacing OEM Parts 8-94468522-0, 8-94468522-1, 8944685220, 8944685221.

 

Key Features & Benefits

 

The vacuum pump return hose is a critical component in your ISUZU truck's vacuum pump system, responsible for recycling used lubricating oil back to the oil reservoir, maintaining optimal oil levels, and ensuring the vacuum pump operates smoothly and efficiently. A faulty or worn return hose can lead to oil leaks, insufficient lubrication, vacuum pump failure, and even serious engine damage-compromising your truck's reliability and operational safety. Our OEM vacuum pump return hose is engineered to meet or exceed original equipment manufacturer (OEM) standards, with precise dimensions and high-quality materials that match the fit and performance of your Isuzu's original part.

 

Specifically designed for ISUZU TFR55, UCS55, G5 T+ trucks equipped with 4JB1-T1 and 4KH1CT5H1 engines, this replacement hose directly replaces the OEM parts with part numbers 8-94468522-0, 8-94468522-1, 8944685220, and 8944685221. It is an ideal solution for truck repairs, routine maintenance, and performance restoration, ensuring your Isuzu truck stays on the road with minimal downtime.

 

Specifications

 

 

Item	Details
OEM Part Numbers	8-94468522-0, 8-94468522-1, 8944685220, 8944685221
Applicable Engine	ISUZU 4JB1-T1, 4KH1CT5H1
Fit Models	ISUZU TFR55, UCS55, G5 T+ Trucks
Product Type	Vacuum Pump Return Hose (OEM Replacement)
Material	High-Grade Reinforced Rubber + Fiberglass Braid - Resistant to oil, high temperature (up to 120℃), corrosion, and mechanical wear; non-deformable and anti-aging
Function	Recycles used oil from the vacuum pump back to the oil reservoir; maintains stable lubrication for the vacuum pump; prevents oil leaks and reduces component wear; ensures the vacuum system operates at peak efficiency
Installation	Direct OEM Fit - No modification or drilling required; easy to install with basic hand tools; perfect match for the original hose's length, diameter, and connection points
Quality Standard	Meets ISO 9001 quality certification; 100% tested before shipment; conforms to OEM specifications for fit, form, and function
Warranty	12-Month Warranty - Covers manufacturing defects and premature failure; free replacement or refund if the product fails to meet performance standards

 

MOQ:1 piece

Packing: neutral box/color box/customer brand package

Shipping:By Express, By Sea ,By Air, By Railway

Delivery Time:1-8 Working days

Shipping:Worldwide shipping

Payment:TT.paypal.Western Union.Trade Assurance

Warranty:1 Year

 

If you are not sure whether this part is suitable for your vehicle, please provide your vehicle model and year, and we will help you confirm.

 

 

Other Type Vacuum Pump Return Hose we can offer :

 

 

 

 

 

Why Choose Us?

 

• We offer three quality options to meet your diverse needs: China ISUZU (Qingling) Quality, Famous Brand Aftermarket Quality, and Japanese ISUZU Quality, all adhering to strict standards to ensure reliable performance for your Isuzu truck.

   

• 100% OEM Compatibility - Precision-engineered to match the exact dimensions, connection points, and performance of Isuzu's original vacuum pump return hose. Compatible with OEM part numbers 8-94468522-0, 8-94468522-1, 8944685220, 8944685221, ensuring a seamless fit for 4JB1-T1/4KH1CT5H1 engines and TFR55, UCS55, G5 T+ trucks. No modifications needed-install and use immediately, saving you time and labor costs.

   

• Premium Durability & Longevity - Crafted from high-grade reinforced rubber and fiberglass braid, this hose is built to withstand the harsh conditions of heavy-duty truck operations. It resists oil corrosion, high temperatures, and mechanical wear, preventing cracks, leaks, and premature failure-common issues with low-quality replacement hoses. Designed for long service life, reducing the need for frequent replacements and lowering your maintenance costs.

   

• Optimal Vacuum System Performance - The vacuum pump is a vital component of your Isuzu truck's operation, and a reliable return hose is essential to its functionality. Our OEM hose ensures efficient oil recycling, maintaining proper lubrication to prevent vacuum pump overheating and wear. This restores the vacuum system's performance, ensuring your truck's brakes, emissions, and other vacuum-dependent systems operate smoothly.

   

• Rigorous Quality Testing - Every hose undergoes strict quality control testing before shipment, including pressure tests, oil resistance tests, and temperature resistance tests. We ensure each product meets or exceeds OEM standards, so you can trust it to perform reliably in even the most demanding trucking environments. Our commitment to quality means fewer breakdowns and less downtime for your fleet.

   

• Cost-Effective Replacement - Our OEM-grade hose offers the same fit and performance as the original Isuzu part but at a more affordable price. Avoid the high cost of dealer parts while getting a product that is built to last. Plus, our 12-month warranty provides added peace of mind, protecting your investment.

 

• 29 YEARS focus on ISUZU truck parts : Wholesaler ISUZU parts for 26 years, Professional in ISUZU parts price and after-sale service !

 

Shipping & Returns

 

• Fast Shipping: Standard and Express options available via DHL/UPS/FedEx.
• Quality Guaranteed: Every part is inspected for manufacturing defects before dispatch.
• Easy Returns: 30-day return policy for unused items in original packaging.

 

Installation Guide

 

Installing our vacuum pump return hose is simple and straightforward, requiring only basic hand tools. Follow these steps for a safe and proper installation:

 

Pre-Installation Preparation - Ensure the truck engine is turned off and completely cool. Disconnect the negative battery terminal to avoid electrical hazards. Gather the necessary tools: a wrench, pliers, and a clean cloth to wipe away any oil residue.

 

Remove the Old Hose - Locate the vacuum pump return hose (connected between the vacuum pump and the oil reservoir). Use pliers to gently loosen the hose clamps, then pull the hose off the connection points. If the old hose is stuck, use a screwdriver to apply light pressure while twisting gently to break it free-be careful not to damage the metal fittings or plastic solenoids, which can be brittle and expensive to replace.

 

Clean Connection Points - Use a clean cloth to wipe away any oil, dirt, or debris from the vacuum pump and oil reservoir connection points. This ensures a tight, leak-free seal with the new hose.

 

Install the New Hose - Slide the new OEM vacuum pump return hose onto the connection points, ensuring it is fully seated (push firmly to avoid gaps). For tight 180-degree bends, ensure the hose is not kinked-if needed, cut the hose slightly longer than the original to maintain a smooth bend.

 

Secure the Hose - Reattach the hose clamps and tighten them securely (do not over-tighten, as this can damage the hose or fittings). For added reliability, replace old spring clips with equal-grip jubilee clips.

 

Post-Installation Check - Reconnect the negative battery terminal. Start the engine and let it run for 5-10 minutes, then inspect the hose and connection points for any oil leaks. If no leaks are found, the installation is complete.

Note: If you are not familiar with truck engine components, we recommend having a professional mechanic perform the installation to ensure safety and proper functionality. Improper installation can lead to hose failure and engine damage.

 

Contact Us

 

For bulk orders, technical inquiries, fitment verification, or custom packaging requests, please contact our sales team. We offer competitive wholesale pricing, fast global shipping, and dedicated support for distributors, repair shops, and fleet operators worldwide.

 

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