Bosal
BRExhaust Replacement Exhaust Nut

Bosal 258-047 Exhaust Nut

Brand Bosal 258-047
Material Copper
Nut Type Hex
Series Direct-fit exhaust
Subtitle Direct-fit
Thread Pitch M10x1.25
Title Exhaust nut
Product line BRExhaust Replacement Exhaust Nut
Fits Honda and Mitsubishi · 11 vehicles

OE replacement nut. Exact fit for hassle-free exhaust repair.

Copper construction. Built with quality materials for lasting durability.

Hex nut design. Direct-fit exhaust hardware for easy installation.

$11.76Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
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Free returns within 60 days if it doesn't fit when fitment is verified.

Bosal BRExhaust Direct-Fit Exhaust Nut

The Bosal BRExhaust Replacement Exhaust Nut, part number 258-047, is a direct-fit copper exhaust fastener for restoring secure exhaust connections. Built for exact fitment and straightforward installation, it supports reliable emissions control and durable exhaust repair on select Honda Civic, Honda Prelude, and Mitsubishi Montero applications.

Key Features

  • Direct-fit exhaust nut for OE-style replacement service
  • Copper material for corrosion resistance in exhaust environments
  • Hex nut design for standard service tool engagement
  • M10x1.25 thread pitch for confirmed application fitment
  • BRExhaust Direct-Fit Exhaust series for targeted exhaust hardware replacement
  • Part number 258-047 for accurate ordering and catalog matching

Product Details

BRExhaust Replacement Exhaust Nut 258-047 is engineered as an OE replacement fastener for exhaust repair where the original nut has worn, seized, or lost clamping integrity. The copper construction is selected for durability in high-heat exhaust locations, while the hex profile supports practical service access during repair work. This Bosal exhaust nut is a direct-fit solution for vehicles that require M10x1.25 thread pitch hardware in the exhaust system.

The BRExhaust Replacement Exhaust Nut line focuses on exact-fit exhaust hardware that restores proper connection points without altering the original exhaust layout. For buyers searching for a Honda Civic exhaust nut replacement, Honda Prelude exhaust hardware, or Mitsubishi Montero exhaust fastener, part number 258-047 provides a cataloged match for the listed applications.

Vehicle Fitment

  • Fits 1994 Mitsubishi Montero, between intermediate pipe and rear silencer; split date to 5/1/1994.
  • Fits 1992-1993 Mitsubishi Montero, between intermediate pipe and rear silencer.
  • Fits 1984-1987 Honda Civic, front pipe inlet.
  • Fits 1984-1987 Honda Prelude, front pipe inlet.

Common Repair Uses

  • Replacing a rusted or seized exhaust nut
  • Restoring a secure seal at the exhaust connection point
  • Repairing damaged threads on exhaust hardware
  • Addressing exhaust leaks caused by loose fasteners
  • Servicing OE-style exhaust joints on Honda and Mitsubishi vehicles

Installation Notes

Confirm the thread pitch, nut type, and exhaust location before installation. This part is specified for M10x1.25 applications and should be matched to the exact vehicle position listed above. Clean the mating threads and connection surfaces before assembly to help achieve proper clamp load and a stable exhaust joint.

Quality Assurance

Bosal BRExhaust replacement hardware is manufactured with quality materials and built for durable service in exhaust repair applications. The direct-fit design supports accurate replacement of the original exhaust nut on the listed Honda Civic, Honda Prelude, and Mitsubishi Montero fitments.

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
1994MitsubishiMontero—3.0LV6N/ABetween Intermediate Pipe and Rear Silencer; Split Date To: To 5/1/1994; BRExhaust Replacement Exhaust Nut
1993MitsubishiMontero—3.0LV6N/ABetween Intermediate Pipe and Rear Silencer; BRExhaust Replacement Exhaust Nut
1992MitsubishiMontero—3.0LV6N/ABetween Intermediate Pipe and Rear Silencer; BRExhaust Replacement Exhaust Nut
1987HondaCivicDX1.3LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1987HondaPrelude—1.8LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1986HondaCivicDX1.3LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1986HondaPrelude—1.8LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1985HondaCivicDX1.3LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1985HondaPrelude—1.8LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1984HondaCivicDX1.3LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut
1984HondaPrelude—1.8LL4N/AFront Pipe; Inlet; BRExhaust Replacement Exhaust Nut