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MagnaFlow 21-685 OEM Grade Direct-Fit Catalytic Converter Federal/EPA Compliant

(Chevrolet C1500 1988-92, Blazer 1992, K1500 1988-92, C1500 Suburban 1992-94; GMC Yukon 1992-94, K1500 1988-92, C1500 1988-92; Volvo XC60 2015-16 + 6 more models)

Part of: Magnaflow OEM Grade Direct-Fit Catalytic Converter Federal EPA Compliant

Other options in this family: Magnaflow 280152 Magnaflow 280054 Magnaflow 280460 Magnaflow 280219 Magnaflow 280543

Manufacturer

Picture for manufacturer Magnaflow

Part Number

21-685
9 reviews
Sale Price

$1,034.00

In Stock (9)

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Usually delivered within 2 days

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Product Details

The MagnaFlow 21-685 is an OEM Grade, Federal/EPA compliant direct-fit catalytic converter engineered to restore factory exhaust performance and keep the check engine light off. Built from high-strength 409 stainless steel, this spun-body converter delivers exceptional corrosion resistance and long-term durability in demanding under-vehicle conditions.

MagnaFlow's dedicated metrology department employs advanced 3D scanning technology during research and development to guarantee precise dimensional accuracy — so this converter fits and functions exactly like the original equipment it replaces. The OE-replicating spun body design incorporates a single laser fusion weld, significantly reducing leak potential, while the compact, low-mass construction promotes superior thermal efficiency.

Key Features:

  • Free-flowing mandrel-bent tubing preserves OEM-like flow geometry and exhaust efficiency
  • Bolt-on direct-fit design — no cutting, welding, or fabrication required
  • 2.5" inlet / 2.5" outlet with bolt-on connection type on both ends
  • Monolithic honeycomb ceramic catalyst with strictly controlled coating for maximum flow and surface area
  • Ribbed stainless steel body minimizes thermal expansion and distortion while protecting the cushioning mat and holding the catalyst in proper alignment
  • Single laser fusion weld on the spun body for a leak-resistant seal
  • Gaskets and hardware included — eliminates the need to reuse corroded factory fasteners
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel
  • Interchanges with OEM part number 36010050
  • Meets or exceeds Federal EPA emissions requirements for OBDII federally registered vehicles
  • Not CARB compliant — Federal/EPA standard only (not for sale or installation in CA, CO, NY, or ME)

All required installation hardware is included in the box, making this a straightforward replacement for the professional installer or experienced DIYer. MagnaFlow is an ISO-9001 certified manufacturer with over 30 years of experience producing emissions-compliant exhaust components in the USA.

Products specifications

Fits

Chevrolet C1500 1988-92, Blazer 1992, K1500 1988-92, C1500 Suburban 1992-94; GMC Yukon 1992-94, K1500 1988-92, C1500 1988-92; Volvo XC60 2015-16, S60 2013-14, XC70 2016, V60 2015-16, V60 Cross Country 2015-16, S60 Cross Country 2016 + 1 more models

Hangers Included

Yes

Grade Type

Regular

Body Type

Spun

Inlet Gasket Included

Yes

Substrate Material

Ceramic

Body Width Position Rear

4

Universal Or Specific Fit

Specific

Inlet Inside Diameter

2.5

Clamps Included

No

Air Tube Adaptable

No

Type

Direct-Fit

Inlet Mounting Hardware Included

No

Body Height Position Front

5

Sensor Port Count

2

Inlet Quantity

1

Body Height Position Rear

4

Series

OEM Grade

Overall Length

46.75

Air Tube Count

0

Body Width Position Front

5

Body Shape

Round

Heat Shield Attached

No

Body Length Position Front

6.25

Outlet Inside Diameter

2.5

Outlet Type

Bolt-On

Outlet Gasket Included

Yes

Body Length Position Rear

8

Outlet Mounting Hardware Included

Yes

Finish

Stainless Steel

Subtitle

Federal / EPA Compliant Direct-Fit Catalytic Converter

Body Material

Stainless Steel

Inlet Type

Bolt-On

Outlet Quantity

1

Tube Material

Stainless Steel

Prompt service and delivery. Very pleased overall.

Great pricing fast shipping, flawless transaction!

Easy fast

That was fast!

Fast Shipping!!!

I just never do top scores

The website was very easy to use and had the prop I was looking for.

Thank you. You are cheaper than West Marine Pro, (although I have to pay shipping,) and faster than Amazon. My poor planning of immediate boat projects, and your products and ease of ordering and two day delivery work well.

I hope it is here before Friday. It did not but it's ok

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