Description
Product Overview
The ACDelco 1148963 Multi-Purpose Fluorescent Leak Detection Dye is engineered for professional automotive and industrial technicians who need a reliable, easy‑to‑use tracer for locating fluid leaks. Packaged in a 1 oz liquid bottle, the dye is a deep black formulation that fluoresces brightly under ultraviolet light, making even the smallest seepage visible on a dark background. Compatible with gasoline, diesel, power steering fluid, and automatic transmission fluid, the dye can be introduced directly into the system without risking corrosion or performance loss. Its formulation is designed to remain chemically stable after the leak has been identified, allowing for post‑diagnostic analysis or re‑testing if necessary. The product carries the OEM part number 10‑5045 and the manufacturer part number 1148963, ensuring exact fit for GM‑specified applications. Physical specifications include a weight of 9.07 g, dimensions of 7.2 × 5.2 × 3.3 inches, and a black exterior machined finish that protects the liquid from light exposure until use.
![[Product front view showing all components]](https://www.joyfulbuy.store/wp-content/uploads/2026/08/c99ec3ed36e74a8c96ef09a796e51ef9.jpg)
Usage
To use the dye, add the recommended amount (typically a few drops) to the fluid reservoir you wish to test. For gasoline or diesel engines, introduce the dye into the fuel tank; for power steering or transmission systems, add it to the respective fluid reservoir. After the system circulates the fluid, inspect the components with a UV leak detection lamp—preferably the matching ACDelco UV Lamp Kit—to reveal bright fluorescent trails that pinpoint the exact location of a leak. This method works equally well in workshop environments, on‑site field repairs, and even in heavy‑duty equipment where traditional visual inspection is impractical. The dye’s ability to stay in the system after testing means you can re‑examine the same area later without having to re‑apply the tracer, saving time and reducing waste. It is especially valuable for fleet maintenance programs, where quick turnaround and accurate diagnostics directly impact vehicle uptime.
Why Choose Us
Choosing the ACDelco 1148963 dye means selecting a product backed by General Motors original equipment standards and a legacy of automotive expertise. The dye’s multi‑purpose compatibility eliminates the need to stock separate tracers for each fluid type, simplifying inventory management and reducing overall cost. Its high‑visibility fluorescence under UV light provides a clear, unmistakable indication of leak paths, minimizing false positives and the guesswork often associated with traditional dye methods. Because the formulation is non‑corrosive and does not alter the physical properties of the fluids, it can be safely used in both new and older systems without compromising performance. Additionally, the product is supported by a robust warranty and ACDelco’s extensive technical support network, ensuring you have access to expert advice should any questions arise during application.
Key Features
- Multi‑fluid compatibility works with gasoline, diesel, power steering and transmission fluids
- Bright UV‑visible fluorescence reveals even the smallest leaks instantly
- Non‑corrosive formula stays in the system after testing for re‑inspection
- OEM‑approved part numbers guarantee exact fit for GM‑specified applications
- Supported by ACDelco technical assistance and warranty for peace of mind
FAQ
How much dye should I add to a fuel tank?
For most passenger‑car fuel tanks, add 2–3 drops of the dye to a full tank. For larger diesel engines, 4–5 drops are recommended. Always follow the specific instructions in the product manual for optimal results.
Can the dye be used with synthetic transmission fluids?
Yes, the dye is formulated to be chemically stable with both conventional and synthetic transmission fluids, making it safe for modern automatic transmissions.
Do I need a special UV lamp to see the fluorescence?
While any UV light source will cause the dye to fluoresce, the ACDelco UV Leak Detection Lamp Kit is calibrated for the dye’s wavelength, providing the brightest and most consistent illumination.
Is the dye safe for the environment?
The dye is designed for closed‑system use and does not evaporate or disperse into the environment under normal operating conditions. Dispose of any unused product according to local hazardous waste regulations.
What should I do if the leak is not visible after using the dye?
If no fluorescence appears, verify that the UV lamp is functioning correctly, ensure the dye was added to the correct fluid, and check that the system has had sufficient time to circulate the fluid. If the issue persists, consult a qualified technician for further diagnosis.







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