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Mastering Massive Passive Retube Kit Version B

Marsoni M251S
Sale price$165.00
Pay 4 payments of $41.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Mastering Massive Passive Retube Kit Version BThis kit is only for Manley MASTERING MASSIVE PASSIVE's with serial number MMMSMP871 and up. Includes (2x) 5814 or 12AU7 tubes for input, and (4x) 6922 tubes for driver output. Be aware that some tube brands are subject to change over time and may not match the pictures shown.
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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]
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4.4 ★★★★★
Based on 420 reviews
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Verified Purchase
mattw
Bozeman, US
★★★★★ 4
Oily situation lol
Configuration: 4-Stroke, Size: 1 GA
Honestly how do you write a review of this product? I would have to run tests for years on multiple oils on various engines to do so. The value was good however and shipping was great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2025
P
Verified Purchase
Peter Schott
Draper, US
★★★★★ 5
Use the best oil to protect your investment
Configuration: 4-Stroke, Size: 1 GA
Great product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 30, 2025
S
Verified Purchase
Sean R.
Whiting, US
★★★★★ 5
Excellent quality
Great quality kit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2025
J
Verified Purchase
Jospeh C Farrell
Whiting, US
★★★★★ 5
Boating maintenance
Perfect replacement parts for your scheduled maintenance, great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
J
Verified Purchase
Jeff Sylvester
Louisville, US
★★★★★ 5
worked great at fair price
works fine on my 1994 volvo penta 3.0 GL the main gasket was wrong, but my 3.0 GL does not have a gasket, the other parts appear to be universal
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2025

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