Choosing a spark igniter for a water heater requires attention to compatibility, durability, and installation ease. The following selections focus on gas water heater igniters and related electrode assemblies designed to deliver fast, reliable ignition in various environments. This guide compares five well-suited options, highlighting compatibility with Reliance FVIR systems and other common brands to help you pick the right part for maintenance or repair.
Summary of chosen products
| Product | Brand | Model/Compatibility | Key Benefit |
|---|---|---|---|
| 9003410 C3 Piezo Ignitor Assembly | rosyquarz | Reliance FVIR gas water heaters; compatible with Rheem, Whirlpool, A.O.Smith, Bradford White (2025) | Fast, battery-free ignition; durable ABS construction |
| 9003410 C3 Piezo Ignitor Assembly | Reliance | Gas water heaters (FVIR) | Specific replacement part for Reliance FVIR systems |
| Water Heater Igniter, 9003410 C3 | DuckcowsC | Reliance FVIR; fits Rheem, Whirlpool, A.O.Smith, Bradford White (2025) | High-quality materials; reliable ignition |
| Lrichy 93868 6 & 10 Gallon RV Igniter Electrode | Lrichy | Atwood/GCH6/GH6 family RV water heaters | Wide model compatibility; easy installation |
| PERMINKS 93868 Spark & Sensor Electrode | PERMINKS | Atwood 93868 RV water heater models | Easier replacement; reliable ignition and sensor function |
Note: All products listed here are designed for gas water heaters and RV applications. Confirm part numbers and model compatibility with your unit before purchase to ensure optimal fit and performance.
9003410 C3 Piezo Ignitor Assembly For FVIR Gas Water Heaters

The Rosyquarz 9003410 C3 Piezo Ignitor Assembly is designed for Reliance FVIR technology gas water heaters, with broad compatibility including Rheem, Whirlpool, A.O.Smith, and Bradford White newer models (2025). Its push-button, battery-free ignition generates a stable arc quickly, reducing ignition time and improving starting efficiency. The unit uses ABS construction for stability and anti-interference performance, enabling reliable ignition across varied temperatures, humidity, and dusty environments. Replacement aligns with part numbers 9003410 and SP14410.
Reliance Water Heater Co 9003410 C3 Piezo Ignitor Assembly

This Reliance-branded C3 Piezo Ignitor Assembly is specifically engineered for gas water heaters that use FVIR technology. It provides reliable, battery-free ignition and supports reliable operation across compatible brands that share the FVIR platform. The kit focuses on maintaining consistent ignition performance, especially in environments prone to dust and humidity, ensuring reliable starts when called upon.
Water Heater Igniter, 9003410 C3 For FVIR & FVIR-Compatible Heaters

The DuckcowsC water heater igniter is built around the same C3 piezo technology, offering compatibility with Reliance FVIR technology gas water heaters and other major brands, including newer Bradford White models (2025). The design emphasizes long-lasting materials and a reliable starting sequence, aiming to minimize ignition delays and ensure steady flame when gas is available. It also notes essential compatibility with the required part numbers.
Lrichy 93868 RV Igniter Electrode Replacement

The Lrichy 93868 spark probe electrode is designed for Atwood/Dometic RV water heaters, covering a broad range of models within the GH6, GCH6, GC6AA, G610, and XT families. The electrode replacement enhances ignition reliability and safety in portable heating setups. Installation is straightforward: remove the old igniter and replace it with the new unit in its original location, ensuring proper spacing and alignment for optimal spark delivery.
PERMINKS 93868 Spark & Sensor Electrode For RV Heaters

The PERMINKS 93868 spark and sensor electrode targets RV water heater models compatible with Atwood 93868 configurations. It supports numerous GCH, GH, GC, XT, and G10 family models, ensuring broad coverage for various installations. The kit emphasizes easy DIY installation with a focus on dependable ignition and sensor function to minimize downtime and maintain hot water availability during travel or camping trips.
93868 Water Heater Igniter Electrode With Spark Probe (LDCRE)

The LDCRE 93868 electrode with spark probe is designed for Atwood GCH6 and related RV water heaters. It provides detailed compatibility across a wide list of models and emphasizes ensuring the spark gap is correct (about 1/8 inch) and the probes are clean and crack-free. This part supports safe operation and reliable starts by maintaining proper ignition circuitry and sensor alignment.
Atwood/RV 93868 Spark & Sensor Electrode Replacement (Pack of 1)

This item is geared toward Atwood 93868 models and related RV water heaters. It highlights easy installation, compatibility across multiple Atwood and XT series models, and reliable ignition performance. The electrode and sensor integration ensure consistent flame initiation and dependable hot water supply during RV adventures or remote camping trips.
Buying Guide: Key Considerations For Spark Igniters And Electrodes
When selecting a spark igniter or electrode for a water heater, consider compatibility first. Many units specifically list FVIR, Reliance, Rheem, Whirlpool, A.O.Smith, Bradford White, and Atwood compatibility. Verify part numbers (such as 9003410 and SP14410) to prevent mismatches.
Durability and construction matter in dusty, humid, or high-temperature environments. Look for ABS or other sturdy housings that resist corrosion and interference from ambient conditions while maintaining a stable ignition arc.
Ease of installation is a practical factor for DIY repairs. Replacement parts that fit in the original mount and align with existing gas valves and spark gaps reduce the risk of misalignment, which can lead to ignition failures.
Performance indicators include ignition speed, reliability across repeated cycles, and sensor functionality. Some parts incorporate integrated sensing electrodes to verify proper ignition and flame presence, which helps protect against abrupt gas buildup or delayed starts.
Brand compatibility and model breadth are useful if you own an RV or multiple water heaters. Parts labeled for a wide range of 6- to 10-gallon RV models (GH6, GCH6, GC6xx families) save time on future replacements and upgrades.
Price and availability can vary by seller and region. Consider sourcing from reputable suppliers with clear return policies and warranty coverage for peace of mind during repairs.
Finally, test and safety checks following installation are essential. Ensure the spark gap is correct, probes are clean and free of corrosion, and reassemble the unit following the manufacturer’s torque and alignment guidelines. If you detect abnormal sparking, corrosion, or improper flame behavior, consult a professional technician.