Exoracing Titanium Intake Exhaust Manifold Nut and Stud Kit

Exoracing Titanium Intake Exhaust Manifold Nut and Stud Kit

Upgrade Honda intake or exhaust manifold hardware with Exoracing Grade 5 titanium M8x1.25 studs and flanged nuts. Options for K, B, D,…

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Choose The Right Titanium Intake Or Exhaust Manifold Stud Kit

The Exoracing titanium intake and exhaust manifold nut and stud kit is designed to replace corroded, rounded or short OEM manifold hardware with Grade 5 titanium M8x1.25 studs and matching titanium flanged nuts.

It is ideal for Honda B-Series, D-Series, F-Series, H-Series and K-Series engines, especially when fitting aftermarket intake manifolds, thermal gaskets, exhaust manifolds, headers or turbo manifolds with thicker flanges.

Thread and size: M8x1.25×49 titanium stud
Material: Grade 5 titanium alloy stud and flanged nut
Install feature: 3mm hex key tip for easier fitting without damaging the threads
Best for: intake manifolds, exhaust manifolds, headers, turbo manifolds and thermal gasket installs
Compatibility: suitable for combined gasket and manifold depths up to 20mm
Included: selected quantity of titanium studs, matching flanged nuts and Exoracing lifetime warranty

Important: choose the option that matches your engine and manifold location. If you only need to replace one missing or damaged stud, choose the universal single option. Always confirm your original manifold thread is M8x1.25 before ordering.

Why Should You Use Titanium Intake Or Exhaust Studs?

Factory Honda intake and exhaust manifold bolts can become rusty, rounded, too short or weak after years of heat cycles and removal. This becomes even more obvious when fitting aftermarket manifolds, thermal intake gaskets or turbo manifolds, because the flange and gasket stack can be thicker than the original Honda setup.

These Exoracing studs are longer than many OEM manifold fasteners and are made from Grade 5 titanium for excellent corrosion resistance, strength-to-weight ratio and engine bay finish. They are a smart upgrade when you are already replacing a manifold, chasing an exhaust leak, fitting a thermal gasket, or refreshing a Honda engine bay.

Unlike normal bolts, studs also make manifold installation easier because the gasket and manifold can be located on the studs before the nuts are tightened. That is especially useful when installing heavier exhaust manifolds, awkward intake manifolds or turbo conversion manifolds.

For a cleaner matching engine bay, pair this kit with the Exoracing dress-up bolt and washer kit. On K-Series builds, it also works well alongside the Exoracing K20/K24 flush spark plug cover and other K-Series titanium hardware, such as the K-Series titanium alternator bolt kit.

Which Option Do I Need?

Option	Engine/location	Quantity included
Universal Single x 1	Replacement single M8x1.25 manifold stud and nut	1
K-Series Intake x 7	Honda K20/K24 intake manifold side	7
K-Series Exhaust x 5	Honda K20/K24 exhaust manifold/header side	5
K-Series Exhaust OEM Style x 5	Honda K20/K24 exhaust side when you want the OEM-style option	5
B-Series Intake x 10	Honda B-Series intake manifold side	10
B-Series Exhaust x 9	Honda B-Series exhaust manifold/header side	9
D-Series Intake x 10	Honda D-Series intake manifold side	10
D-Series Exhaust x 9	Honda D-Series exhaust manifold/header side	9
F-Series Intake x 10	Honda F-Series intake manifold side	10
F-Series Exhaust x 7	Honda F-Series exhaust manifold/header side	7
H-Series Intake x 10	Honda H-Series intake manifold side	10
H-Series Exhaust x 9	Honda H-Series exhaust manifold/header side	9

Purchase Includes

1 x selected Exoracing titanium manifold nut and stud kit
Matching Grade 5 titanium flanged nuts for the selected option
1 x Exoracing lifetime warranty

Features

Grade 5 titanium M8 stud and flanged nut
M8x1.25×49 stud thread, pitch and length
3mm hex key tip for easier installation
Compatible with combined gasket and manifold depths up to 20mm
Suitable for intake and exhaust manifold applications
Useful with aftermarket manifolds, thermal gaskets, headers and turbo manifolds
Approximately 45% lighter than equivalent steel hardware
Excellent corrosion resistance compared with standard steel hardware
Titanium nut and stud weight: 11.8g
Includes Exoracing lifetime warranty

Exoracing Titanium Intake And Exhaust Stud Kit Installation Guide

Confirm the original intake or exhaust manifold thread is M8x1.25.
Remove the old studs or bolts carefully. If they are corroded, use the correct penetrating fluid and take your time to avoid damaging the cylinder head threads.
Apply a small amount of suitable anti-seize to the titanium stud threads before installing them into an aluminium cylinder head.
Install the Exoracing titanium studs using a 3mm Allen key or hex socket. Do not exceed 30Nm / 22lbft on the stud.
Fit the gasket and manifold over the studs.
Install the supplied titanium flanged nuts and tighten to the correct OEM/manufacturer torque setting for your engine and manifold.
After a few heat cycles, recheck and retorque the studs and nuts if required.

For a full installation walkthrough, read our titanium intake or exhaust studs installation guide.

Technical Specifications

Material	Grade 5 titanium alloy
Stud thread, pitch and length	M8x1.25×49
Install tip	3mm hex key tip
Nut type	Grade 5 titanium flanged hex nut
Titanium nut and stud weight	11.8g
Maximum stud install torque	30Nm / 22lbft
Compatible gasket/manifold depth	Up to 20mm combined depth
Corrosion resistance	Salt water and aggressive chemicals
Melting point	1604°C – 1660°C
Warranty	Exoracing lifetime warranty

Frequently Asked Questions

Will these fit my Honda engine?

They are made for M8x1.25 manifold applications and are offered in Honda K-Series, B-Series, D-Series, F-Series and H-Series intake/exhaust quantities. Always confirm your original manifold thread and choose the option that matches your engine and manifold side.

Are these for intake or exhaust manifolds?

Both. Choose the intake or exhaust option for your engine. The quantity changes depending on the engine and manifold location.

Why are these longer than standard hardware?

Aftermarket intake manifolds, exhaust manifolds, thermal gaskets and turbo manifolds often use thicker flanges or gasket stacks than OEM parts. The M8x1.25×49 stud gives more usable length for those setups, with compatibility up to 20mm combined gasket and manifold depth.

Do I need anti-seize?

Yes. We recommend using suitable anti-seize when installing titanium hardware into cast aluminium cylinder heads to reduce the chance of galling.

What torque should I use?

Do not exceed 30Nm / 22lbft when installing the studs with the 3mm hex tip. Tighten the supplied nuts to the correct OEM/manufacturer torque setting for your engine and manifold.

Notes

Confirm your original manifold thread is M8x1.25 before ordering.
Do not exceed 30Nm / 22lbft when installing the studs.
Use anti-seize when installing titanium hardware into aluminium cylinder heads.
Retorque after a few heat cycles where required.
Professional installation is recommended if you are not confident in removing old manifold studs.

Official product information supplied by Exoracing.

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