Bevinsee Exhaust Manifold Studs Kit M10-1.25 x 48mm — 12 Pairs A2-70 Stainless, Split Thread Lengths

Bevinsee 12 Pairs Exhaust Manifold Stud Nuts Kit is a complete M10-1.25 x 48mm stainless-steel fastener set engineered to replace or upgrade manifold studs and flanged nuts on compatible Toyota, Nissan, and Honda engines.

Whether you're rebuilding an exhaust manifold, replacing rusty studs, or preparing an engine for long-term use, the right fasteners matter. This kit includes 12 precision-turned A2-70 stainless-steel studs and 12 flanged nuts designed for high corrosion resistance, consistent thread engagement, and predictable torque behavior. The studs feature split threaded lengths to accommodate different flange thicknesses and provide a secure hold for exhaust components.

What are the exact dimensions and thread details of these studs?

These studs are specified as M10-1.25 x 48mm with distinct threaded sections and a hex nut size of 14mm. The overall stud length is 48mm, and the thread lengths are divided into 25mm and 15mm sections to suit various manifold flange designs. Use these measurements to confirm compatibility with your vehicle or replacement parts.

• Stud specification: M10-1.25 thread pitch
• Overall stud length: 48mm
• Threaded sections: 25mm and 15mm lengths
• Nut wrench size: 14mm (hex)

How does the A2-70 stainless steel construction help in exhaust applications?

A2-70 stainless steel combines good corrosion resistance with reliable strength for under-hood and exhaust environments. It resists oxidation and surface rust better than plain steel, reducing the risk of seized studs and making future disassembly easier. This material choice is suitable for the thermal cycling and exposure typical in exhaust systems.

• Material: A2-70 stainless steel for corrosion resistance
• Durability: engineered for repeated heat cycles
• Maintenance: easier removal versus untreated fasteners
• Precision-made for consistent thread engagement

Which vehicles and jobs is this 12-pair kit compatible with?

The kit is intended for various Toyota, Nissan, and Honda models — compatibility depends on engine/manifold specifications. It suits exhaust manifold replacements, turbo flange reconstructions, and head-to-manifold fastening on engines using M10-1.25 studs of similar length. Always verify the vehicle’s stud length and thread pitch before installation.

• Common uses: exhaust manifold or turbo flange fastening
• Vehicle families: select Toyota, Nissan, Honda models (verify before purchase)
• Quantity: 12 studs and 12 flanged nuts per kit
• Fit check: confirm M10-1.25 thread and 48mm length

How should I install and torque these studs and nuts safely?

Install studs by hand-threading into the head or manifold then tighten to the recommended torque for your engine using the 14mm nut size. Use anti-seize on the stud threads if desired, and follow vehicle-specific torque sequences to avoid warping. Replace any damaged gaskets and inspect mating surfaces before final assembly.

• Hand-start threads, then torque to OEM specifications
• Nut wrench size: 14mm; consider anti-seize on threads
• Follow head/manifold torque sequence and specs
• Inspect flanges and gaskets prior to tightening

Who is this for: This Bevinsee kit is aimed at DIY mechanics, professional technicians, and restorers who need a reliable set of replacement manifold studs and flanged nuts for compatible Toyota, Nissan, and Honda engines. It suits customers replacing corroded originals, prepping an engine for a rebuild, or upgrading to stainless fasteners for easier future service. Confirm thread pitch and stud length for your application before ordering to ensure a proper fit.