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Porsche > 997 (911) MK1 2005-2008 > 997 MK1 Carrera 4S 3.8L 2005-08 > Exhausts > Brackets / Clamps / Straps >

Exhaust muffler strap. Porsche 993 ❭ 99311111907

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OE Match

99311111907/1

Product Information

Exhaust muffler strap
This OE Match exhaust muffler strap is a direct replacement for the original Porsche component used in the 993 exhaust system. It is designed to wrap around and support the rear silencer, securing it firmly to the vehicle’s mounting brackets. It fits either left or right side silencers and is commonly used in pairs, with one strap per muffler. Additional hardware (bolt) may be required: 90006736201
Sold individually

Fits:
Porsche 993 C2 / C4 1994 - 1998
* not turbo models

Diagram Ref No 1

The muffler strap holds the exhaust silencer securely in place, preventing movement or sagging. It helps maintain proper exhaust alignment while reducing vibration and stress on exhaust joints and mounting points.

Function
• Secures the exhaust muffler to the vehicle chassis
• Maintains correct exhaust alignment and positioning
• Absorbs and reduces vibration from exhaust system
• Prevents excessive movement or sagging of the silencer
• Supports long-term durability of exhaust components

Exhaust straps are exposed to constant heat cycles, moisture, and road debris, which can lead to corrosion or fatigue over time. A worn or broken strap can cause the muffler to loosen or misalign, leading to noise, vibration, or damage to the exhaust system. Replacing it ensures secure mounting and preserves exhaust system integrity.

When to replace
•  Visible corrosion, cracking, or fatigue
•  Loose or sagging exhaust muffler
•  Increased vibration or rattling noise
•  During exhaust repair or replacement
•  Missing or damaged mounting strap

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99311111907

99311111907

The product you are viewing cross references to these numbers

Related products

Mounting Kit for Rear Exhaust Porsche 997

97330KIT

Product Information

Mounting kit for rear exhaust.
The OE Match Rear Exhaust Mounting Kit is a complete hardware set designed to replace worn or missing mounting components for the rear exhaust system on the Porsche 997. It includes the essential rubber hangers, brackets, bolts, and insulators needed to restore proper exhaust support and alignment.

Fits:
Porsche 997 3.6L-3.8L 2005-08 (not Turbo/GT2)

Kit included:
2x Pipe Connector, 55x58.5x75mm, stainless steel
2x Bolt, M8x1.25x140mm
2x Bolt, M8x1.25x70mm
4x Lock nut, M8x1.25

This product is a comprehensive OE Match rear exhaust mounting kit for the Porsche 997 family. Over time, exhaust mounting rubbers, brackets, and associated fixings can deteriorate due to heat cycling, vibration, and exposure to corrosive elements. This kit brings together all the normal wear components in one package, allowing a complete refresh of the rear exhaust support hardware.

Each piece in the kit has been selected or engineered to match the dimensions, materials, and load-bearing characteristics of the factory parts, ensuring correct exhaust position and reduced risk of sagging, rattling, or detachment.

Over time, rear exhaust mounting components can:
• Harden, crack, or split due to age and heat
• Corrode and weaken under road salt and moisture exposure
• Stretch or deform, allowing excessive exhaust movement
• Loosen, causing rattle, vibration, or exhaust contact with bodywork

Failing mounts can lead to:
• Exhaust system sagging
• Unwanted noises
• Metal fatigue or cracking
• Reduced ground clearance

Installing a complete OE Match rear exhaust mounting kit restores proper support, improves NVH (noise, vibration, harshness), and helps prolong the life of the exhaust system.

When to replace. Install this kit when:
• You notice exhaust sagging at the rear
• There’s excessive vibration or noise from the exhaust area
• Exhaust hangers show visible wear, cracking, or separation
• You are replacing or removing the rear exhaust system
• You’re performing a comprehensive underbody service

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97330KIT

99711152000

90037818301

90037810501

90038000501

The product you are viewing cross references to these numbers

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Exhaust muffler strap. Porsche 993 ❭ 99311111907