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Spectre Plenum 4in. OD x 9in. (Air Cleaner to Stud Inlet) - Single

Marsoni M251S
Sale price$125.99
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Spectre Plenum 4in. OD x 9in. (Air Cleaner to Stud Inlet) - SingleThis Spectre Air Intake Plenum has a single inlet with a 4 inch outside diameter. Manufactured from polished cast aluminum, this plenum is designed to be compatible with Spectre 4 inch tubing, filters, and accessories. 3 1 2 inches tall and measuring 9 inches from air cleaner stud to the inlet, it fits carburetors and TBI throttle bodies with a 5 1 8 inch inlet. All of our air intake components are designed and built using high quality materials and
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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.
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4.6 ★★★★★
Based on 2436 reviews
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Verified Purchase
Sophia
Charlottesville, US
★★★★★ 5
Exact fit, no trimming needed
Style: One Piece
Ordered this for my Ford F-150 and it dropped right into the airbox perfectly — same dimensions as the OEM filter, same end seals, same fit. No gaps, no air bypass around the edges. Clean swap in under five minutes. Engine runs smooth and the price is unbeatable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
very nice product
Style: Two Pieces
It fits perfectly. Easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
N
Verified Purchase
neelping
Dallas, US
★★★★★ 5
Good Product and Price.
Style: One Piece
Great filter, fits perfectly. Very close to OEM fit. I have 2015 Mercedes E350, fit perfectly.
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Reviewed in the United States on December 3, 2025
A
Verified Purchase
A. Kissee
Louisville, US
★★★★★ 5
Great plug
Style: Single
My car goes through these every 30,000 miles or so. But fantastic plug all around. Performs flawlessly even at almost 9000 rpm.
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Reviewed in the United States on September 11, 2015
E
Verified Purchase
Edward P Shih
Los Angeles, US
★★★★★ 5
Product as described, Works great.
Style: Single
Product as described, Works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2015

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