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MagnaFlow HM Grade Direct-Fit Catalytic Converter 23058 for the 1997-1998 BMW 540i / 740i }
MagnaFlow 23058 main product photo, alternate angle 2 }
MagnaFlow 23058 hm grade direct-fit catalytic converter, opposite side view of the turntable spin }
MagnaFlow 23058 hm grade direct-fit catalytic converter, opposite front three-quarter view of the turntable spin }
MagnaFlow 23058 hm grade direct-fit catalytic converter, opposite rear three-quarter view of the turntable spin }
MagnaFlow 23058 hm grade direct-fit catalytic converter, rear view of the turntable spin }
MagnaFlow 23058 hm grade direct-fit catalytic converter, rear three-quarter view of the turntable spin }
MagnaFlow 23058 hm grade direct-fit catalytic converter, front three-quarter view of the turntable spin }
MagnaFlow 23058 hm grade direct-fit catalytic converter, side view of the turntable spin }
Brand: MagnaflowSKU / Part #: MAG23058
Regular price
$682.00
Regular price
$682.00
Sale price
$682.00
Check your purchasing power Apply at checkout
Subtotal: $682.00
MagnaFlow HM Grade Converter 1997-1998 BMW 540i / 740i 4.4L 23058
Subtotal: $682.00

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Overview

MagnaFlow 23058 is a direct-fit replacement catalytic converter for the 1997-1998 BMW 540i / 740i 4.4L. It is Federal/EPA compliant and installs at the stock mounting points. Coverage spans 3 model years: 1997-1998 BMW 540i (Base), 1997-1998 BMW 740i (Base) and 1996-1998 BMW 740iL (Base). It replaces the passenger-side catalyst only; confirm the position on your vehicle before ordering. Shipping weight is about 19 lb.

Features

  • Federal/EPA compliant; not for California, Colorado or New York
  • Passenger-side position
  • Fits 1997-1998 BMW 540i: Base
  • Fits 1997-1998 BMW 740i: Base
  • Fits 1996-1998 BMW 740iL: Base

What is in the box

  • Gaskets and mounting hardware for installation

Specs

Part number 23058
Type HM Grade Direct-Fit Catalytic Converter
Emissions Federal/EPA compliant (not for CARB states)
Grade HM Grade
Material 16-gauge 409 stainless steel
Shipping weight 19 lb

Construction

  • Federal/EPA compliant for use in the 46 non-CARB states
  • Bolts in where the original sat, with no cutting or welding
  • Corrosion-resistant 16-gauge 409 stainless construction
  • Spun body closed with a single laser-fusion weld to resist leaks
  • Mandrel-bent inlet and outlet pipes keep factory flow
  • OE-sized 410 stainless hangers
  • 308 stainless MIG welds
  • Shape developed from 3D scans of the original part

Installation

Direct-fit and bolt-on; a capable DIYer can install it with the right tools, though professional installation is recommended.

Fitment notes

Sold for federal (EPA) emissions use only; it cannot be sold or installed in California, Colorado or New York. Check the fitment table below against your vehicle, including trim and engine.

Fitment

Make Model Chassis Year Engine
BMW 540i (Base) — 1997-1998 4.4L
BMW 740i (Base) — 1997-1998 4.4L
BMW 740iL (Base) — 1996-1998 4.4L
Fitment
YearMakeModel

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.

Reviews & questions

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