Details
BrandMagnaflow
SKUMAG3391476
GTIN / UPC888563077864
Manufacturer Part Number3391476
Product Information
This California Grade direct-fit converter replaces the original pre-OBDII converter on 1987-1995 Chevrolet and GMC full-size trucks, vans and SUVs, plus the 1992-1993 Astro and Safari 4.3L. It is covered by CARB Executive Order D-193-164 for the listed vehicles. The spun stainless steel body replicates the OE design and is closed with a single laser fusion weld, with mandrel-bent stainless tubing and OE geometry taken from 3D scans so it bolts in with no cutting or welding.
Specifications
| Type | Direct-Fit Catalytic Converter |
| Grade | California Grade |
| Material | Stainless steel |
| Body | Spun body (OE style) |
| Install | Bolt-in direct fit; no cutting or welding required |
| Fitment Notes | Covers the 5.7L V8 (most listed models), the 7.4L V8 (select 1987-1989 30-series and 3500 models), the 4.8L (1988 R30) and the 4.3L V6 (1992-1993 Astro and Safari). Pre-OBDII. Installation is permitted only when the vehicle's Engine Family Number appears in CARB Executive Order D-193-164 |
| Emissions | Covered by CARB Executive Order D-193-164 for the 1987-1995 models listed below |
| Finish | Stainless |
| Body Type | Spun |
| Inlet Type | Pipe Connection |
| Clamps Included | No |
| Hangers Included | No |
| Legality | Legal for sale in all 50 states including California, Colorado, New York and Maine. Installation is permitted only if the vehicle's Executive Order number and Engine Family Number appear in this converter's CARB Executive Order. |
| Quantity | 1 |
| Warranty | Limited 5 year / 50,000 mile construction and emissions |
| Part Number | 3391476 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1992-1993 | Chevrolet | Astro | Base |
| 1992-1993 | Chevrolet | Astro | CL |
| 1992-1993 | Chevrolet | Astro | CS |
| 1992-1993 | Chevrolet | Astro | LT |
| 1987 | Chevrolet | Blazer | Custom Deluxe |
| 1988-1991 | Chevrolet | Blazer | Scottsdale |
| 1987-1991 | Chevrolet | Blazer | Silverado |
| 1988-1993 | Chevrolet | C1500 | Cheyenne |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1993 | Chevrolet | C1500 | Silverado |
| 1990-1993 | Chevrolet | C1500 | WT |
| 1988-1993 | Chevrolet | C2500 | Cheyenne |
| 1988-1992 | Chevrolet | C2500 | Scottsdale |
| 1988-1993 | Chevrolet | C2500 | Silverado |
| 1995 | Chevrolet | C3500 | Base |
| 1995 | Chevrolet | C3500 | Cheyenne |
| 1995 | Chevrolet | C3500 | Silverado |
| 1987 | Chevrolet | G10 | Bonaventure |
| 1987-1993 | Chevrolet | G10 | Sportvan |
| 1987-1994 | Chevrolet | G20 | Beauville |
| 1987-1994 | Chevrolet | G20 | Chevy Van |
| 1987-1994 | Chevrolet | G20 | Sportvan |
| 1991-1994 | Chevrolet | G30 | Beauville |
| 1991-1994 | Chevrolet | G30 | Chevy Van |
| 1991-1994 | Chevrolet | G30 | Hi-Cube |
| 1991-1994 | Chevrolet | G30 | Sportvan |
| 1988-1993 | Chevrolet | K1500 | Cheyenne |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1993 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1993 | Chevrolet | K1500 | WT |
| 1988-1993 | Chevrolet | K2500 | Cheyenne |
| 1988-1992 | Chevrolet | K2500 | Scottsdale |
| 1988-1993 | Chevrolet | K2500 | Silverado |
| 1995 | Chevrolet | K3500 | Base |
| 1995 | Chevrolet | K3500 | Cheyenne |
| 1995 | Chevrolet | K3500 | Silverado |
| 1987 | Chevrolet | R10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R10 Suburban | Silverado |
| 1989-1991 | Chevrolet | R1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R1500 Suburban | Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987-1988 | Chevrolet | R30 | Custom Deluxe |
| 1987-1988 | Chevrolet | R30 | Scottsdale |
| 1987-1988 | Chevrolet | R30 | Silverado |
| 1989-1991 | Chevrolet | R3500 | Cheyenne |
| 1989-1990 | Chevrolet | R3500 | Scottsdale |
| 1989-1991 | Chevrolet | R3500 | Silverado |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V10 Suburban | Silverado |
| 1989-1991 | Chevrolet | V1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | V1500 Suburban | Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987-1988 | Chevrolet | V30 | Custom Deluxe |
| 1987-1988 | Chevrolet | V30 | Scottsdale |
| 1987-1988 | Chevrolet | V30 | Silverado |
| 1989-1991 | Chevrolet | V3500 | Cheyenne |
| 1989-1990 | Chevrolet | V3500 | Scottsdale |
| 1989-1991 | Chevrolet | V3500 | Silverado |
| 1988-1993 | GMC | C1500 | Sierra |
| 1988-1993 | GMC | C1500 | Sierra SLE |
| 1988-1993 | GMC | C1500 | Sierra SLX |
| 1988-1993 | GMC | C2500 | Sierra |
| 1988-1993 | GMC | C2500 | Sierra SLE |
| 1988-1993 | GMC | C2500 | Sierra SLX |
| 1988-1993 | GMC | C3500 | Sierra |
| 1994 | GMC | C3500 | Sierra SL |
| 1988-1994 | GMC | C3500 | Sierra SLE |
| 1994 | GMC | C3500 | Sierra SLT |
| 1988-1993 | GMC | C3500 | Sierra SLX |
| 1987-1993 | GMC | G1500 | Rally |
| 1987-1993 | GMC | G1500 | Rally STX |
| 1987-1994 | GMC | G2500 | Rally |
| 1987-1994 | GMC | G2500 | Rally STX |
| 1987-1994 | GMC | G2500 | Vandura |
| 1991-1994 | GMC | G3500 | Magnavan |
| 1991-1994 | GMC | G3500 | Rally |
| 1991-1994 | GMC | G3500 | Rally Camper Special |
| 1991-1994 | GMC | G3500 | Rally STX |
| 1991-1994 | GMC | G3500 | Vandura |
| 1991-1994 | GMC | G3500 | Vandura Special |
| 1987-1991 | GMC | Jimmy | Base |
| 1987-1990 | GMC | Jimmy | Sierra Classic |
| 1988-1993 | GMC | K1500 | Sierra |
| 1988-1993 | GMC | K1500 | Sierra SLE |
| 1988-1993 | GMC | K1500 | Sierra SLX |
| 1993 | GMC | K1500 | Sierra Sport |
| 1988-1993 | GMC | K2500 | Sierra |
| 1988-1993 | GMC | K2500 | Sierra SLE |
| 1988-1993 | GMC | K2500 | Sierra SLX |
| 1988-1993 | GMC | K3500 | Sierra |
| 1994-1995 | GMC | K3500 | Sierra SL |
| 1988-1995 | GMC | K3500 | Sierra SLE |
| 1994-1995 | GMC | K3500 | Sierra SLT |
| 1988-1993 | GMC | K3500 | Sierra SLX |
| 1987 | GMC | R1500 | Base |
| 1987 | GMC | R1500 | High Sierra |
| 1987 | GMC | R1500 | Sierra Classic |
| 1987-1991 | GMC | R1500 Suburban | Base |
| 1987 | GMC | R1500 Suburban | High Sierra |
| 1990 | GMC | R1500 Suburban | SLE |
| 1987-1989 | GMC | R1500 Suburban | Sierra Classic |
| 1987-1989 | GMC | R2500 | Base |
| 1987-1989 | GMC | R2500 | High Sierra |
| 1987-1989 | GMC | R2500 | Sierra Classic |
| 1987-1991 | GMC | R2500 Suburban | Base |
| 1987 | GMC | R2500 Suburban | High Sierra |
| 1990 | GMC | R2500 Suburban | SLE |
| 1987-1989 | GMC | R2500 Suburban | Sierra Classic |
| 1987-1991 | GMC | R3500 | Base |
| 1987-1989 | GMC | R3500 | High Sierra |
| 1990-1991 | GMC | R3500 | SLE |
| 1987-1989 | GMC | R3500 | Sierra Classic |
| 1992-1993 | GMC | Safari | Base |
| 1993 | GMC | Safari | GT |
| 1992-1993 | GMC | Safari | SLE |
| 1992-1993 | GMC | Safari | SLT |
| 1987 | GMC | V1500 | Base |
| 1987 | GMC | V1500 | High Sierra |
| 1987 | GMC | V1500 | Sierra Classic |
| 1987-1991 | GMC | V2500 Suburban | Base |
| 1987 | GMC | V2500 Suburban | High Sierra |
| 1990 | GMC | V2500 Suburban | SLE |
| 1987-1989 | GMC | V2500 Suburban | Sierra Classic |
| 1987-1991 | GMC | V3500 | Base |
| 1987-1989 | GMC | V3500 | High Sierra |
| 1990-1991 | GMC | V3500 | SLE |
| 1987-1989 | GMC | V3500 | Sierra Classic |
| 1994 | GMC | Yukon | Base |
| 1994 | GMC | Yukon | SLE |
| 1994 | GMC | Yukon | Sport |
Is this converter legal in California?
- Yes. It is covered by CARB Executive Order D-193-164. Installation is permitted only when your vehicle's Engine Family Number appears in that Executive Order, so check the emissions label under the hood against the listed vehicles.
Does it require cutting or welding?
- No. It is a direct-fit, bolt-in replacement built to OE geometry.
Which engines does it fit?
- The 5.7L V8 on most listed trucks, vans and SUVs, the 7.4L V8 on select 1987-1989 30-series and 3500 models, the 4.8L on the 1988 R30 and the 4.3L V6 on the 1992-1993 Astro and Safari.
What warranty does it carry?
- Limited 5 year / 50,000 mile construction and emissions.
Shipping
- In stock orders typically ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
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