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MagnaFlow Universal California Catalytic Converter - 3391005
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MagnaFlow Universal California Catalytic Converter – 3391005

MagnaFlow Exhaust
  • Universal California catalytic converter, part number M/F3391005
  • 2.25 in. inlet and outlet, 11 in. length, 5 in. width
  • Not air tube kit adaptable
  • Fits 1975–1995 Chevrolet, Ford, GMC, Jeep and other models

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Description

Overview

The MagnaFlow 3391005 is a universal California catalytic converter with a 2.25 in. inlet and outlet, an 11 in. length, a 5 in. width and an 11 in. overall length. It fits trucks, SUVs and vans from 1975 to 1995, including the Chevrolet S10 and Blazer, Ford Bronco and F-Series, GMC S15 and Sonoma, and Jeep Cherokee XJ, Wrangler YJ and Grand Cherokee ZJ.

Key features

  • 2.25 in. inlet and outlet
  • Universal California catalytic converter design
  • Overall length 11 in. and width 5 in.
  • Not air tube kit adaptable

Sizing a universal converter

Universal converters are sold to fit many vehicles, so the fit depends on the exhaust you already have. Start with the inlet diameter, then check the overall length against the space between the rear axle and the floor. A converter that is too long can rub against the body or the spare tire area, and one that is too short can leave gaps that cause leaks.

Older trucks often have rusted pipes near the joints. Cut back to sound metal before fitting the new converter, and use new clamps or flange gaskets so the joints seal properly. Reusing old, stretched clamps is a common cause of exhaust leaks after a swap.

  • Cut back rusted pipe to sound metal before fitting
  • Replace clamps and flange gaskets rather than reusing them
  • Check clearance around the heat shield after assembly

Specifications

Brand MagnaFlow Exhaust
Part number 3391005
Inlet and outlet 2.25 in.
Length 11 in.
Width 5 in.
Overall length 11 in.
Air tube kit adaptable No

Vehicle fitment

The manufacturer fitment list covers 1975–1995 models, including 1982–1993 Chevrolet S10 and S10 Blazer trims, 1975–1983 Ford Bronco, 1975–1980 Ford F-150, 1993–1995 Jeep Grand Cherokee ZJ, and 1987–1995 Jeep Wrangler YJ in Base, Islander, Laredo, Renegade, Rio Grande, S, SE, Sahara and Sport trims.

Vehicles outside 1975–1995 are not covered, and many models appear only for certain years. Confirm your vehicle’s year, model and trim before ordering.

Installation notes

Because the converter is not air tube kit adaptable, match the 2.25 in. inlet and outlet to your pipes and confirm the 11 in. length fits the space. Let the exhaust cool before you start.

What’s included

Clamps, gaskets and hangers may be needed for the joint, so check the package contents against your installation before starting.

SKU: M/F3391005 Categories: , ,

Fitment

VehicleYearsTrims
Chevrolet S101982–1993Baja, Base, Durango, EL, Sport, Tahoe
Chevrolet S10 Blazer1983–1989Base, High Country, Sport, Tahoe
Dodge D1001978–1979Custom, Warlock, Warlock II
Dodge D2001978–1979Base
Dodge Ramcharger1976–1979Base, SE
Ford Bronco1975–1983Custom, Northland, Ranger, Ranger XLT, XLS, XLT Lariat
Ford Bronco Sport1975–1977All
Ford F-1001975–1979, 1981–1983Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT, XL, XLS, XLT, XLT Lariat
Ford F-1501975–1980Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT, XLT
Ford F-2501978–1981Base, Custom, Northland, Ranger, Ranger Lariat, Ranger XLT
Ford F-3501981Custom, Ranger, Ranger Lariat, Ranger XLT
Ford Ranger1995STX, Splash, XL, XL Sport, XLT
GMC S151982–1989Base, EL, Gypsy, High Sierra, Sierra Classic, Sierra Grande
GMC S15 Jimmy1983–1989Base, Gypsy, High Sierra, Sierra Classic, Timberline
GMC Sonoma1991–1993Base, SLE, SLS
Jeep Cherokee1983Wide Track Chief
Jeep Cherokee (SJ)1981–1983Base, Chief, Pioneer
Jeep Cherokee (XJ)1984–1995Base, Briarwood, Chief, Country, Laredo, Limited, Pioneer, SE, Sport
Jeep Comanche1986–1992Base, Chief, Custom, Eliminator, Laredo, Pioneer, X, XLS
Jeep Grand Cherokee (ZJ)1993–1995Base, Laredo, Limited, Orvis, SE
Jeep Grand Wagoneer (SJ)1993Base
Jeep Wagoneer (SJ)1981, 1986–1990Base, Limited
Jeep Wrangler (YJ)1987–1995Base, Islander, Laredo, Renegade, Rio Grande, S, SE, Sahara, Sport
Mazda B22001990–1993Base, LE-5, SE-5
Mazda B26001990–1993Base, LE-5, SE-5
Nissan D211988–1989Base, E, XE
Plymouth Trailduster1976–1979Base
Suzuki Sidekick1993–1995JLX, JS, JX
Toyota Land Cruiser1988–1992Base
Toyota T1001993–1994Base, DX, SR5
Toyota T100 One-Ton1993All

Use “Select your vehicle” at the top of the page to check this part against your vehicle.

Questions & Answers

Will the MagnaFlow 3391005 fit a Jeep Wrangler YJ?

Yes. It fits 1987–1995 Jeep Wrangler (YJ) models in Base, Islander, Laredo, Renegade, Rio Grande, S, SE, Sahara and Sport trims. Confirm your year, model and trim before ordering.

What are the inlet and outlet sizes on the 3391005?

The inlet and outlet are both 2.25 in. The converter is 11 in. long, 5 in. wide and 11 in. overall. It is not air tube kit adaptable.

Is the 3391005 the same as the 3391004?

No. The 3391005 and 3391004 are separate part numbers. The 3391005 has a 2.25 in. inlet and outlet, while the 3391004 has a 2 in. inlet and outlet, so match the inlet size to your pipes.

Is it better to weld or clamp a universal converter into place?

Clamped joints are usually easier to service and re-fit later. Welding is more permanent and requires skill and the right equipment. Choose the method that suits your exhaust and how often you expect to work on it.

How often should exhaust clamps be checked?

Check them during routine inspections, especially after rough trail use or after the first heat cycles of a new installation. Tighten them only when the system is cool, and replace any clamps that are bent or corroded.

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