Exhaust Manifold Clamp Repair Kit: Options for a Leaking Manifold

A manifold leak announces itself with a sharp tick on a cold start, then fades as the metal warms. The sound comes back each morning, the joint weeps soot, and the cabin can pick up a faint exhaust smell at a stop. An exhaust manifold clamp repair kit answers that leak by pressing the manifold flange back against the cylinder head, or by sealing the joint, without pulling the head or drilling out a snapped bolt.

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Below: how the kits differ, what to check, and which kit suits each kind of leak.

#	Product	Shop Score	Buy
1	Exhaust Manifold Bolt Repair Kit Compatible	9.6/10	Buy on Amazon
2	917-504 Exhaust Manifold Clamp Repair Kit	9.6/10	Buy on Amazon
3	3mirrors 917-107 Exhaust Manifold Clamp Repair Kit	9.6/10	Buy on Amazon
4	LOCBONDSO High Temp Exhaust Repair Kit & Muffler	9.6/10	Buy on Amazon

1

Exhaust Manifold Bolt Repair Kit Compatible

TEMSONE·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A bolt repair kit for GM trucks and SUVs that stops leaks between the manifold and the cylinder head, with a 12 months warranty and no need to remove the head or drill out broken bolts.

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Pros

• Stops leaks between the exhaust manifold and the cylinder head
• Fits GM trucks and SUVs with 4.8, 5.3, 6.2 and 6.0 Liter engines
• Installs without removing the cylinder head or drilling out broken bolts
• 12 months warranty with lifelong customer service

Cons

• GM trucks and SUVs only, so it does not cover Ford manifolds
• Material is named only as high quality, with no named metal or grade
• No heat rating is stated for the repair bolt
• No bolt size is stated

2

917-504 Exhaust Manifold Clamp Repair Kit

Rogierra·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A passenger side clamp kit for 1997-2016 Ford trucks and vans that seals a manifold leak from outside, with a set screw and shim pressing the flange flush.

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Pros

• Clamps the flange from outside, so the snapped stud stays in place
• Set screw and solid shim press the flange flush to the head
• Premium iron that expands and contracts with the factory manifold
• Clamp body, set screw, steel shim, and mounting bolts included

Cons

• Passenger side only, so a driver side leak needs a different kit
• Title and bullets give different fitment ranges, so check the side before ordering
• No torque figure is given for the set screw
• Ford trucks and vans only, so it does not cover GM manifolds

3

3mirrors 917-107 Exhaust Manifold Clamp Repair Kit

3mirrors·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A forged steel clamp kit for LS engines that seals a manifold leak without removing the head or drilling out broken end bolts, with bolts rated HRF 10.9.

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Pros

• Forged steel block with bolts rated HRF 10.9
• Bolts to the cylinder head to form a seal, with no head removal or drilling
• Covers the driver side rear and passenger side front positions
• OE references 917-107 and 11518860 are given for matching

Cons

• No warranty term is stated
• Driver rear and passenger front only; other positions use different kits
• No heat rating is stated
• The long run of LS engine codes needs a careful match

4

LOCBONDSO High Temp Exhaust Repair Kit & Muffler

LOCBONDSO·9.6/10 Shop Score

i

The Shop Score runs from 9.2 to 9.8 and weighs performance (35%), build (25%), value (25%), safety (10%, where it applies) and warranty (5%), using only what the manufacturer and the listing publish. How we pick ›

A non-slumping exhaust putty in a 5.3 oz size that seals holes and leaks in mufflers, tailpipes and catalytic converters, with heat resistance up to 2012℉ (1100℃).

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Pros

• Heat resistant up to 2012℉ (1100℃)
• Non-slumping formula in a 5.3 oz size for sealing holes and leaks
• Suits mufflers, tailpipes, catalytic converters, and exhaust joints
• Dries in 30 minutes, then needs the engine run for 10 minutes before driving

Cons

• No warranty term is stated
• Putty seals the leak surface only and adds no clamping force
• Grey color only
• Needs dry time plus an engine run before driving

Exhaust Manifold Clamp Repair Kit: What a Repair Kit Does

A clamp kit bolts to the cylinder head beside the broken bolt and presses the flange flat, so gas stops escaping at the joint. A bolt repair kit holds the manifold tight with a fresh repair bolt. A sealant putty fills holes and gaps, then hardens into a seal. The exhaust repair clamps guide covers clamp styles in more depth.

Fitment decides everything here: each kit names the engines and year ranges it covers, and a kit made for a side of an engine family will not cross over to another. Match the kit to the leak: a flange gap wants a clamp or a bracket, while a hole in a pipe wants sealant.

The Kits in This Guide

Each kit below handles a different part of the same job: holding the manifold flange tight to the head, or sealing the pipe where gas escapes.

Let the exhaust cool before touching any clamp, bolt or sealant. Never run an engine in a closed garage, even with the door partly open.

FAQ: garage tools

Can an exhaust manifold clamp repair kit fix a leak without removing the cylinder head?

Yes. The clamp and bolt kits bolt on beside the broken fastener and press the flange to the head, with no need to pull the head or drill out a broken bolt.

What does exhaust sealant do that a clamp cannot?

Sealant fills holes and gaps in mufflers, tailpipes, catalytic converters and joints, and hardens where no flange exists to clamp. A clamp suits a gap at the flange, where pressure holds the joint shut.

How long does the sealant need before driving?

The LOCBONDSO putty needs 30 minutes to dry, then the engine must run for at least 10 minutes before driving, so the seal sets before the pipe sees road use.

Will a clamp kit fit any truck?

No. The TEMSONE kit covers GM trucks and SUVs with 4.8, 5.3 and 6.2 Liter engines from 1999-2013 and 6.0 Liter engines from 1999-2021, while the Rogierra kit covers the passenger side of 1997-2016 Ford trucks and vans. Match the year range and the side before ordering.

For pipe work beyond a clamp, the exhaust pipe expander tool guide covers sizing and build for the next step of the job.