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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Sierra Wire Set MerCruiser 5.0L-5.7L T-Bolt 18-8821-1Sierra Wire Set MerCruiser 5. 0L 5. 7L T Bolt 18 8821 1Magnetic Suppression Core manufactured for your specific application. Kevlar core for maximum durability and long lifeDurable stainless steel wound conductor for maximum horsepower and engine performancePremium silicone jacketing and boots for the ultimate in high temperature protectionSuperior RFI suppression for the most sensitive electronic systemCorrosion resistant stainless steel spark plug
Sierra Wire Set MerCruiser 5.0L-5.7L T-Bolt 18-8821-1Magnetic Suppression Core manufactured for your specific application.Kevlar® core for maximum durability and long lifeDurable stainless steel wound conductor for maximum horsepower and engine performancePremium silicone jacketing and boots for the ultimate in high temperature protectionSuperior RFI suppression for the most sensitive electronic systemCorrosion resistant stainless steel spark plug and distributor terminals for maximum conductivityOE style boots provide a sealed barrier against heat; dirt and moistureThunderbolt type ignition
WARRANTY INFORMATION
We are an authorized reseller for all products listed on our website. Please contact the manufacturer for warranty info.
SPECS
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UPC:
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808282194499
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MPN:
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18-8821-1
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Application:
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Mercruiser - 350 Mag Ski - 5.0L Alpha & Bravo Generation II - 8 cylinder - Thunderbolt ignition
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Perfect replacement part
Perfect replacement
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Quality Champion Brand plugs
Repeat customer. Quality Champion product worth the extra $
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
★★★★★ 5
Original OEM equipment
They seem to be the copper plug required for this engine. Runs great and as it should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
Genuine Champion Spark plugs
Genuine Champion Spark plugs at a great price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
★★★★★ 5
Go For It.
Good Plug
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Reviewed in the United States on April 9, 2026