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Air and Fuel› Intake Manifolds and Components

Motordyne

5/16" Plenum Intake Spacer

$297.31 $260.16 Save $37.15

SKU: MD-516BZ

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Motordyne 5/16" Basic Plenum Spacer is a performance intake component designed to yield the best overall gains for your vehicle. It is engineered with melt-proof materials, pre-attached gaskets, and self-sealing plenum internal supports for OEM reliability.
Show original supplier description
The Motordyne 5/16" Plenum Intake Spacer is a high-performance induction component engineered to increase engine power and efficiency by optimizing the intake plenum height on 2003-2006 Nissan 350Z vehicles. By increasing plenum volume, this spacer helps improve airflow characteristics, delivering a measurable increase in horsepower and torque over the stock configuration. A primary benefit of this design is that it maintains compatibility with existing components, allowing you to keep your factory engine cover and strut bar in place. Ensure that all mounting surfaces are clean and free of debris prior to installation to maintain an airtight seal and achieve the intended performance gains. This product is specifically calibrated for the 2003-2006 Nissan 350Z engine architecture.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMotordyne
Part NumberMD-516BZ
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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