If you’re shopping for a pilot tube water heater, the goal is a safe, reliable ignition and steady hot water supply. This guide highlights five well-matched options, explaining who each is best for and why you might pick them. It targets homeowners, RV owners, and service pros seeking dependable replacement parts that fit common models or improve installation ease. Below is a quick summary of the top picks to help you compare at a glance.
| Product | Best For | Key Benefit |
|---|---|---|
| LP Propane Gas Water Heater Pilot Assembly (SURIEEN) | Homeowners with Desa, Reddy, All-Pro style heaters | Universal fit; durable brass/zinc alloy construction |
| Water Heater Pilot Assembly (Natural Gas, 24″) | General natural gas water heaters | Standard 24″ tubing; straightforward replacement |
| MENSI Pilot Tubing (24″) | Gas furnace or water heater pilots needing flexible routing | Male compression fittings; broad compatibility |
| Water Heater Pilot Assembly for Atwood 91603 | RV, camper, trailer setups | Includes thermocouple; designed for compact RV units |
| Upgraded SP20075 Pilot & Igniter Kit | Rheem/GE/Richmond style heaters, replacement upgrades | Enhanced ignition performance and gaskets |
LP Propane Gas Water Heater Pilot Assembly — SURIEEN

The SURIEEN LP pilot assembly is designed as a universal replacement for a range of propane water heaters. It’s compatible with various models including Desa, Reddy, All-Pro, Universal, NR, Sears, Remington, and more. The brass and zinc alloy construction aims to deliver durability with regular use. It’s best for homeowners who want a universal solution that reduces the complexity of matching exact part numbers. A caution: verify your original part size matches this item before replacement, and avoid bending the thermopile line too hard near the crimped part to prevent short circuits.
Water Heater Pilot Assembly with Thermocouple (Natural Gas)

This natural gas pilot assembly includes a thermocouple and standard 24″ tubing. It’s positioned as a general replacement that fits many but not all water heaters on the market. It’s suitable for users seeking a straightforward, ready-to-install pilot module with a built-in thermocouple for immediate ignition. Best for setups where 24″ tubing aligns with existing connections. Limitation: confirm compatibility with your exact model before purchasing.
MENSI Pilot Tubing With Male Compression Fittings

This 24-inch pilot tube from MENSI features male compression fittings on both ends, designed for easy, leak-resistant connections. It’s compatible with Raypak models (53A, 055A/B, 105A/B, Spa-Pak) and fits many standard gas furnace and water heater pilots. Best for installations requiring flexible routing with secure compression connections. Use caution if your system uses threaded fittings different from 7/16-24UNS; confirm thread size before buying.
Water Heater Pilot Assembly For Atwood 91603

This RV-specific pilot assembly is designed for Atwood 91603 and similar units used in campers and trailers. It includes a pilot tube and thermocouple, with a typical 9-inch thermocouple/pilot tube length. Best for RV users who need a compact, ready-to-install replacement that mirrors factory configurations. Limitation: intended primarily for RV water heaters, not all residential models.
Upgraded SP20075 Pilot & Igniter Kit

The SP20075 kit is an upgraded replacement for common Rheem, GE, and Richmond natural gas water heaters. It focuses on improving ignition reliability and sealing with silicone gaskets that withstand high burner temperatures. Best for users seeking an ignition upgrade that can address light-off delays or ignition failures. Caution: verify appearance and fit with your model before purchasing to ensure compatibility.
Buying Guide
What should you check before buying a pilot tube water heater part?
- Fuel type compatibility: Ensure the kit supports propane or natural gas as used by your unit.
- Connection size and fittings: Confirm thread size (for example, 7/16-24UNS) and whether compression fittings are needed.
- Tubing length: Standard lengths are around 9″ to 24″; choose a length that fits your installation routing without bending tightly.
- Ignition components: Decide if you need a thermocouple included or if you’re replacing just the pilot tube.
- RV vs. residential use: RV-specific kits are typically more compact and tailored for limited spaces.
- Durability and material: Brass and zinc alloy parts tend to offer longer life in high-heat environments.
What installation considerations matter?
- Follow manufacturer instructions for wiring and mounting brackets to avoid dangerous drafts or leaks.
- Avoid bending wires and tight turns near crimps to prevent electrical short circuits or low voltage issues.
- Keep accidental contact with hot surfaces to prevent damage to tubes and thermocouples.
How to choose between universal vs. model-specific kits?
- Universal pilot assemblies save time when you have multiple heater brands in one location but require size matching to your unit.
- Model-specific parts guarantee fit with fewer adjustments but require exact part matching for each unit.
Frequently Asked Questions
- Q: Do pilot assemblies include a thermocouple? A: Some kits include a thermocouple; others require separate purchase.
- Q: How do I know if my tubing length is correct? A: Measure the distance between the pilot assembly and the burner area and choose a length that accommodates gentle routing.
- Q: Can I replace just the thermocouple? A: It’s possible if the thermocouple is the only failing part, but many kits bundle the thermocouple with the pilot tube for convenience.
- Q: Are these parts safe to install myself? A: Installation should follow the product instructions and local codes; consult a professional if unsure about gas connections.
- Q: Will a universal kit fit my unique model? A: Check compatibility lists and confirm exact part size before purchasing to avoid mismatches.
- Q: Do these kits work with RV water heaters? A: Some kits are designed for RV units, others for residential appliances; verify model compatibility.