RBC Intake Manifold Adapter O-Ring Set

Name: RBC Intake Manifold Adapter O-Ring Set
Brand: PRL Motorsports
SKU: PRL-HC9-IM-RING
Price: 8.28 USD
Availability: InStock
Rating: 5.0 (5 reviews)

RBC Intake Manifold Adapter O-Ring Set - Main image

$8.28 ~~$12~~ In stock

Category: Intake Manifolds & Adapters

Fits all 2006-2015 Civic Si w/RBC Intake Manifold
Fits all variant models including RHD, International Models, Etc.

Overview

Adapter O-Rings for RBC Intake manifold

Kit Includes:

(10) Various Size O-Rings for both sides of the adapter
(1) Size 120 O Ring
(1) Size 124 O Ring
(4) Size 140 O Ring (4) Size 142 O Ring

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

James ★★★★★ Oct 22, 2026

The kit's ten assorted o-rings were exactly what I needed to finish my RBC swap, and the fact it covers RHD and international models gave me confidence nothing would be missing mid-install. Fit was snug on every connection I used.

Sofia ★★★★★ Oct 21, 2026

The ten o-rings covered all the connections on my RBC swap perfectly, no hunting for missing sizes. Fitment was spot-on for my 2012 Si, and the rubber feels like it'll hold up well against heat and pressure.

Hazel O. ★★★★★ Oct 20, 2026

Installed these on my 2010 Si and the different size o-rings covered every connection on the RBC manifold. No more vacuum leaks after swapping over, everything sealed up tight the first time.