Sierra Distributor Cap 18-5376 - Replaces Crusader 20222, Ford & GM V-8 Inboard Ignition

The Sierra 18-5376 is a replacement distributor cap engineered for inboard marine ignition systems, including Crusader applications, and fits Ford and GM V-8 engines equipped with Mallory ignition setups. It is designed to work with breakerless ignition systems that sense current levels in the coil and adjust dwell to maintain peak energy across the full RPM range, delivering on average four times more available energy between 3000 and 5000 RPM and roughly twice the plug voltage compared to older point-type ignition systems. Because ignition energy is sustained and coil current is regulated to peak just before spark, coil life is extended and timing stability is improved throughout the engine's operating range.

This distributor cap is a direct fit for the OEM part it replaces, restoring proper spark distribution to each cylinder and helping the engine start reliably and run smoothly. It is built to the fit, form, and function of the original equipment component, making it a straightforward swap during a tune-up or ignition system service.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5376
• Product Type: Distributor Cap
• Application: Inboard - Crusader Ignition System
• Engine Fitment: Ford and GM V-8 engines with Mallory ignition
• Weight: 0.6 pounds
• UPC: 030999236647
• Replaces (OEM): 20222

Fitment

• Inboard - Crusader Ignition System
• Ford and GM V-8 engines with Mallory ignition

Replaces (OEM)

• 20222

Frequently Asked Questions

What does the Sierra 18-5376 distributor cap fit? The Sierra 18-5376 is designed for inboard Crusader ignition systems and fits Ford and GM V-8 engines equipped with Mallory ignition.

What OEM part number does 18-5376 replace? This cap replaces OEM part number 20222 on applicable Crusader inboard ignition systems.

How much does the 18-5376 distributor cap weigh? It weighs 0.6 pounds.

Is the 18-5376 a direct OEM replacement or an aftermarket part? The Sierra 18-5376 is built to the fit, form, and function of the original equipment cap it replaces, functioning as a direct replacement rather than a universal fit part.

Does this distributor cap work with point-type ignition systems? It is designed for breakerless-style ignition systems that sense coil current and adjust dwell electronically, rather than traditional point-type systems, and it develops significantly more available energy and plug voltage than point-type setups in the 3000-5000 RPM range.

Will the 18-5376 help with hard starting or misfires? By restoring proper spark distribution to each cylinder and maintaining sustained ignition energy through peak RPM, the Sierra 18-5376 helps address rough running, hard starting, and misfire symptoms caused by a worn or cracked distributor cap.

Does the 18-5376 improve ignition timing stability? Yes, the system this cap is part of provides more stable timing by regulating coil current to reach peak level just prior to spark.

Is a gasket included with the 18-5376 distributor cap? The Sierra 18-5376 distributor cap is supplied as a complete cap assembly for installation on compatible Crusader inboard ignition systems.

What is the UPC for the Sierra 18-5376? The UPC for the Sierra 18-5376 distributor cap is 030999236647.

How is the 18-5376 different from the Sierra 18-5375 or 18-5384 distributor caps? The 18-5376 is a distinct part number engineered to replace OEM number 20222, while other Sierra distributor caps in the same family replace different OEM numbers, so buyers should confirm their original cap's OEM number before ordering.

Does the 18-5376 extend ignition coil life? Yes, because ignition energy is sustained and coil current is regulated to reach peak just before spark, coil life is increased as part of the ignition system this cap serves.