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AMS B58 intake manifold with twin intercooler cores for the BMW M340i

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AMS B58 intake manifold with twin intercooler cores for the BMW M340i, front view

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AMS B58 intake manifold with twin intercooler cores for the BMW M340i, top view

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AMS B58 intake manifold with twin intercooler cores for the BMW M340i, side view

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AMS B58 Intake Manifold with Twin Intercooler Cores | BMW M340i

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Brand: AMS PerformanceSKU / Part #: AMS.51.08.0001-1

Regular price: $3,999.95
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AMS B58 Intake Manifold with Twin Intercooler Cores | BMW M340i

Subtotal: $3,999.95

Not sure it fits? Text us your VINSee all fitment

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Overview

The AMS Performance BMW B58 Intake Manifold (part number AMS.51.08.0001-1) replaces the factory manifold and integrated air-to-water intercooler. AMS uses a parallel twin-core design that routes coolant very efficiently, with cores rated beyond 1,250 hp and 135% more core area than OEM.

A CFD-verified design spreads air evenly to each cylinder. A flush-mounted -8AN auxiliary rail supports optional port injection at atomization-optimized angles; it ships with billet plugs installed so you can run direct injection only and add port injection later. Three extra -4AN ports provide vacuum sources.

It bolts in with A/C and power steering retained and includes all hardware, lines and fittings. AMS has confirmed fitment on the 2019+ M340i (G20/G21). It does not fit with the OEM engine cover and is designed for the OEM oil filter cap.

Features

Parallel twin intercooler cores rated 1,250+ hp
135% more core area than OEM
CFD-verified airflow
Flush -8AN port injection rail
Billet port plugs pre-installed
3 extra -4AN vacuum ports

What Is Included

AMS intake manifold with parallel air-to-water intercooler cores
Auxiliary fuel rail and port plugs (injectors sold separately)
All hardware, lines and fittings

Specs

Specification	Detail
Part number	AMS.51.08.0001-1
Brand	AMS Performance
Product	BMW B58 Intake Manifold
Cores	Parallel air-to-water, rated 1,250+ hp
Core area	+135% vs OEM
Fuel rail	-8AN, Bosch-style injectors (e.g. Injector Dynamics 1050)
Extra ports	3 x -4AN ORB
Shipping weight	29 lb
Shipping box	26 x 15 x 10 in

FAQ

Does it fit other B58 BMWs?
AMS confirms the M340i. M440i, M540i, Z4 M40i and others with Gen 2 B58 are likely but not test fit; call us first.

Can I keep my engine cover?
No. It does not fit with the OEM engine cover.

Which injectors work?
Bosch-style injectors such as Injector Dynamics 1050 with 14mm o-rings and no top cap.

Fitment Notes

Confirmed fit: 2020-2025 BMW M340i with the B58 sold in the US. Browse all AMS Performance parts.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.

Year	Make	Model	Chassis	Engine
2020-2025	BMW	M340i	G20	3.0L B58 turbo I6

Fitment

Year	Make	Model

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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