Description
Product Overview
The Delta LA303R lightning arrestor is engineered for three‑phase applications, delivering reliable protection from voltage spikes in the 0‑250VAC range. Constructed from high‑grade dielectric materials, the unit measures 3.4 x 3.4 x 4.8 inches and weighs just 13 ounces, allowing easy integration into tight engine compartments. Certified by the manufacturer and listed under UPC 782381303016, this model meets stringent automotive and powersports standards.
Usage
Designed for use in automotive exhaust systems, powersports vehicles, and industrial three‑phase equipment, the LA303R safeguards sensitive electronics and ignition components from lightning‑induced surges. Ideal for mechanics, off‑road enthusiasts, and fleet operators who require durable, low‑maintenance spark arrestors in demanding environments.

Why Choose Us
Delta’s reputation for quality engineering ensures each arrestor undergoes rigorous testing for durability and performance. The LA303R offers a proven track record with a 5‑star customer rating, guaranteeing consistent operation without frequent replacements. Our support includes detailed installation guides and responsive technical assistance.
Key Features
- Three‑phase protection for 0‑250VAC voltage spikes
- Compact 3.4 x 3.4 x 4.8 in footprint fits confined spaces
- Lightweight 13‑oz design simplifies mounting
- Durable dielectric construction resists corrosion and heat
- Verified automotive and powersports compliance
FAQ
What types of vehicles can use the LA303R?
The LA303R is suitable for cars, motorcycles, ATVs, and any three‑phase equipment that requires spark suppression in the 0‑250VAC range.
How is the arrestor installed?
Installation involves mounting the unit in the exhaust line using the provided brackets, then connecting the leads to the vehicle’s ignition system according to the included wiring diagram.
Does the arrestor require regular maintenance?
No, the LA303R is a sealed unit that does not need routine cleaning; periodic visual inspections are sufficient to ensure continued performance.
Is the product covered by a warranty?
Yes, Delta provides a one‑year limited warranty covering manufacturing defects.
Can the LA303R be used in marine environments?
While the unit is corrosion‑resistant, for marine applications we recommend additional protective coatings to extend service life.





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