Description
Product Overview
The GruDawu Vacuum Pump Seal Kit is engineered for 5.9L diesel engines built between 1991 and 2002. It replaces part number 254089742 and matches the original manufacturer part number 4089742. The kit contains a sealing gasket with oil‑absorbing fluff, a precision‑cut oil seal, and two durable O‑rings. All components are fabricated from high‑grade, oil‑resistant materials to ensure a long‑lasting seal and prevent future leakage.
![[Product front view showing all components]](https://www.mysticgo.store/wp-content/uploads/2026/06/20222bcf010e44c7a3855d42794a9547.jpg)
Usage
Designed for automotive technicians and DIY enthusiasts, this kit fits directly into the vacuum pump housing of compatible diesel trucks and SUVs. Ideal for routine maintenance, repair of oil leaks, or restoring performance after wear. Install the gasket first, followed by the oil seal and O‑rings, using standard tools. No special equipment is required, making it suitable for both professional garages and home workshops.
Why Choose Us
GruDawu combines decades of automotive expertise with rigorous quality control. Each seal undergoes dimensional testing to meet OEM specifications, guaranteeing a perfect fit. Our oil‑absorbing fluff layer provides an extra barrier against seepage, extending service intervals. Backed by a responsive customer support team, we offer technical assistance and a hassle‑free return policy.
Key Features
- Exact OEM fit for 5.9L diesel engines 1991‑2002, eliminating guesswork.
- Oil‑absorbing fluff on the gasket maximizes leak protection.
- High‑quality oil seal and O‑rings resist wear and temperature extremes.
- Complete kit eliminates the need to purchase a full vacuum pump.
- Dedicated support team ready to help with installation questions.
FAQ
Will this kit fit a 2003 model?
No, the kit is specifically designed for 1991‑2002 5.9L diesel engines. For later models, please check the compatible part list.
Do I need to replace the entire vacuum pump?
No, the seal kit repairs the leaking area, allowing you to keep the existing pump and save on parts.
What tools are required for installation?
Standard hand tools such as a socket set, screwdrivers, and a torque wrench are sufficient.
Is the kit covered by a warranty?
Yes, GruDawu offers a one‑year limited warranty against manufacturing defects.
Can I install the kit myself?
Absolutely. The kit includes detailed instructions and is designed for straightforward installation by both professionals and DIY users.
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