RHB32S – Champion Aerospace Aviation Spark Plug
Available now on the Airparts.aero Marketplace.
Overview
The RHB32S Spark Plug from Champion Aerospace is a premium, FAA-approved aviation spark plug designed for high-performance and high-reliability ignition in aircraft piston engines. Engineered with a shielded barrel and massive electrode design, the RHB32S delivers consistent spark energy, superior fouling resistance, and extended service intervals in a wide range of general aviation applications.
This spark plug features a removable terminal, standard 18mm thread, and is built for shielded ignition harness systems, making it ideal for Lycoming, Continental, Franklin, and other certified and experimental engine platforms. With a massive center electrode and advanced ceramic insulator, the RHB32S ensures rapid heat dissipation, stable combustion, and reduced maintenance cycles under various engine loads and flight conditions.
Key Features
- Massive Electrode Design: Supports high spark energy and long service life.
- Shielded Aviation Configuration: Compatible with aircraft ignition harnesses for EMI protection.
- 18mm Thread Size: Fits standard magneto-driven aircraft engines.
- Removable Terminal: Offers compatibility with various harness and connector types.
- Anti-Fouling Performance: Resists oil and carbon fouling in rich mixture or cold start scenarios.
- FAA-PMA Certified: Airworthy and legal for installation in type-certificated piston engine aircraft.
Technical Specifications
- Part Number: RHB32S
- Manufacturer: Champion Aerospace
- Type: Massive Electrode, Shielded Aviation Spark Plug
- Thread Size: 18mm x 1.5
- Reach: 0.5 inch (1/2")
- Hex Size: 7/8 inch
- Terminal Type: Removable
- Certification: FAA-PMA Approved
- Heat Range: Mid-range (suitable for most general aviation engine temperatures)
Aircraft Engine Compatibility
Commonly used in:
- Lycoming O-235, O-320, IO-360, and derivatives
- Continental O-200, O-470, IO-520, and IO-550
- Franklin and other piston-powered GA engines
- STC and field-approved experimental aircraft
Always consult the engine manufacturer's spark plug compatibility chart or IPC before installation.
Applications
- General Aviation Aircraft Maintenance
- Annual Inspection Spark Plug Replacement
- Engine Overhaul Ignition Systems
- Cold Weather and Low RPM Operations
Why Choose the RHB32S Spark Plug?
- Champion Aerospace Proven Quality: Trusted by OEMs and MROs across the globe.
- Superior Combustion Stability: Delivers smooth engine operation across all flight phases.
- Longer Service Intervals: Reduces frequency of plug cleaning and replacement.
- Certified for Safety: Meets or exceeds FAA requirements for spark plug performance and durability.
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Meta Description: Buy the RHB32S Champion shielded spark plug for Lycoming and Continental aircraft engines. FAA certified. Available now at Airparts.aero.
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RHB32S, Champion aircraft spark plug, shielded spark plug aviation, FAA spark plug Lycoming, massive electrode plug, aviation ignition component, 18mm aircraft spark plug, spark plug Continental engine, Airparts.aero.
Order Your RHB32S Spark Plug Today
Ignite peak engine performance with Champion’s trusted aviation spark technology.
Order the RHB32S Spark Plug today from Airparts.aero for certified quality, fast shipping, and expert support for your aircraft ignition system.
The RHB32S Champion Spark Plug offers rugged, high-temperature performance designed to meet the operational demands of general aviation piston engines. Whether you're replacing plugs during annual inspections or tuning up for peak engine output, Champion's massive electrode design ensures stable combustion, long service life, and resistance to common fouling issues. At Airparts.aero, we supply OEM-trusted, FAA-certified ignition parts to maintain engine efficiency and airworthiness.
Gap settings and torque specifications should be followed per engine manufacturer’s service manual. Use proper anti-seize and ignition lead torque procedures.
Description: Spark Plug
Part Number: RHB32S
Alternate Part Numbers: RHB32E, RHB32S, RHB32SB, RHB32P
Approved Replacement for: Continental Motors 646632, Lycoming Engines 1182-M7, Champion RHB32S[B]
FAA Eligibility: [ Click Here ]
Product Overview:
Champion Aerospace designs and manufactures Champion-brand piston-engine ignition components for both OEM and aftermarket for general aviation aircraft applications. Every spark plug manufactured has built-in design advantages that assure longer life and greater reliability.
A typical spark plug number with symbol explanation:
1. Resistor | None–No Resistor | R–Mil-Spec. Resistor-Erosion protection | ||
2. Barrel Style | None — Unshielded | E — Shielded 5/8″-24 Thread | ||
H — Shielded 3/4″-20 Thread (All Weather Plug) |
| |||
3. Mounting Thread — Reach — Hex Size | B-18mm 13/16″ / 2.06cm 7/8″ / 2.22cm | M–18mm 1/2″/1.27cm 7/8″/2.22cm | ||
L-14mm 1/2″/1.27cm 13/16/2.06cm | U18mm 1-1/8″/2.85cm 13/16/2.06cm | |||
J — 14mm 3/8″/0.95cm 13/16/2.06cm |
| |||
4. Heat Rating Position | Low number–cold | High number–hot | ||
5. Electrode Design | None-Conventional single | E — Two prong massive N — 4 prong massive | ||
W — Fine wire (Iridium) | B —2 prong massive, Tangent to Center | |||
P–Fine wire (Platinum) |
|
* Shielded barrel thread size. Check barrel size – 5/8×24 or 3/4×20 threads before ordering and select the proper plug number, See page 236 for Sparkplug Application Table.
** The “Iridium S” sparkplugs replace the Platinum and “W” Iridium types. Increased bore diameter improves scavenging action. Greater clearance volume can accept more combustion deposits. Single Iridium electrode offers greater resistance to lead the attack. Easy to clean easy to gap
Item Specification:
| Body Style | : | Electrically shielded, partial insulator, gasket | |
| Reach Length | : | 0.812" Inches Nominal | |
| Usage Design | : | Aircraft engine | |
| Width Across Flats | : | 0.875" Inches Nominal | |
| Thread Size and Series/Type Designator and Location | : | 18-1.5MM base ERR-100 | |
| Thread Size and Series/Type Designator and Location | : | 3/4-20 unef shielding ERR-100 | |
| Height Above Mounting Surface | : | 2.578" Inches Nominal | |
| Special Features | : | New spark plug only | |
| Reference Number Differentiating Characteristics | : | As differentiated by the special features requirement |
Fits in Aircraft Engine models:
Continental Motors
| • O-470 | (-U, -T) | |
| • IO-470 | (-D, -E, -F, -H, -L, -M, -N, -S, -U, -V) | |
| • GIO-470 | (-A) | |
| • TSIO-470 | (-B, -C, -D) | |
| • GTSIO-520 | (-D, -F, -G, -H, -K, -L, -M, -N) | |
| • IO-520 | (-A, -B, -BA, -BB, -C, -CB, -D, -F, -J, -K, -L, -M, -MB, -N, -NB) | |
| • L/IO-520 | (-P) | |
| • L/TSIO-520 | (-B, -C, -D, -DB, -E, -EB, -G, -H, -J, -JB, -K, -KB, -L, -LB, -M, -N, -NB, -P, -R, -T, -U, -UB, VB, -WB, -AE, -BE, -CE) | |
| • IO-550 | (-A, -B, -C, -D, -E, -F, -L, -N, -P, -R) | |
| • IOF-550 | (-B, -C, -D, -E, -F, -L, -N, -P, -R) | |
| • TSIO-550 | (-A, -B, -C, -D, -E, -G, -K, -J, -N) |
Lycoming™ Engines
| • IO-360 | (-A, -C) | |
| • HIO-360 | (-E, -F) | |
| • LHIO-360 | (-F) | |
| • TO-360 | (-C, -F) | |
| • TIO-360 | (-A, -C) | |
| • TVO-435 | (-A, -B, -C, -D, -E, -F, -G) | |
| • VO-435 | (-A, -B) | |
| • GO-480 | (-G1, -G2) | |
| • IGO-480 | (-A) | |
| • GSO-480 | (No Suffix) | |
| • IGSO-480 | (No Suffix) | |
| • O-540 | (-9, -L) | |
| • IO-540 | (-E, -G, -J, -K, -M, -P, -R, -S, -AA, -AC) | |
| • IGO-540 | (-A, -B) | |
| • IGSO-540 | (-A, -B) | |
| • IVO-540 | (-A) | |
| • AEIO-540 | (-L) | |
| • TIO-540 | (-A, -C, -E, -F, -G, -H, -J, -K, -N, -R, -S, -T, -U, -V, -W, -AA, -AB, -AE, -AF, -AG, -AH, -AJ, -AK) | |
| • LTIO-540 | (-F, -J, -N, -R, -U, -V) | |
| • TIVO-540 | (-A) | |
| • VO-540 | (-A, -B, -C) | |
| • TIO-541 | (-A, -E) | |
| • TIGO-541 | (-E) | |
| • IO-720 | (-A, -B, -D) |
Related Documents:
Lycoming Service Instruction: [ Click Here ]
AviAll Spark Plugs: [ Click Here ]
**Lycoming™ Engine Model IGO and IGSO-540 Parts Catalog: [ Click Here ]
See Page 54, Figure 29, Item 1
AirParts stocks thousands of engine and engine overhaul parts. Cranks, cases, cams, cylinders, and more. Most available on exchange programs.
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| Additional info | |
|---|---|
| Colors | Gold |
| Features | Reconditioned by: Aircraft Spark Plug Service |
| Dimensions | |
|---|---|
| Dimensions (W x H x D) | 5.19" × 1.57" × 1.07" inches |
| Length | 5.19" inches |
| Weight | 0.25 lb |
| Specifications | |
|---|---|
| 8130-3 Eligible | Yes |
| ATA Chapter | 74 ATA Ignition System |
| Available Conditions | NE / NS / AR |
| Cage Code | 0AFL4 |
| Country of origin | United States of America |
| ECCN / USML | EAR99 |
| FAA Approval Code | PMA |
| Grip | 13/16"/2.06 cm |
| Hazmat Code | Not Applicable |
| Hazmat(Y/N) | N |
| Material | Iridium |
| NSN | 2925-01-018-6725 |
| Schedule B | 8511.10.0000 |
| Thread | 3/4-20 unef |
| Total Shelf Life (days) | Not Applicable |
| Type | Spark Plug |
| Units of Measure (UoM) | Each |
| Brand | Champion Aerospace |
| Color | Gold |
| Condition status | NE - New |
