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Young Wolf Exhaust Manifold Nuts Set Review: Reliable high-temperature fastening?

16Pcs High Strength Stud Bolt Pin Screw Exhaust Manifold Nuts Set, 10.9 M8 x 40 8 M8 x 1.25 CU SW13 with Collar
4.5
[High-Grade Material]  Made from grade 10.9 materials for superior strength and long-lasting durability.
[Extreme Temperature Range]  Operates reliably from -60°C to 450°C for extreme environment applications.
[Precise Bolt Specifications]  M8 x 1.25 thread, SW13 head, 43mm total length (23+12+8mm).
[OE Part Number]  Bosal No. 258-950 ensures accurate OEM fit and easy identification.
[Bulk Packaging]  Includes 8 sets per package for efficient inventory and workshop use.
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Exhaust fastening kit designed to secure manifold connections under repeated heating and cooling. Confidence for DIY mechanics and professional garages who need dependable fastenings. Is Young Wolf Exhaust Manifold Nuts Set the right choice for routine exhaust work?

⚡ At a Glance
  • Material Grade: Material grade of 10.9 for high tensile strength and durability
  • Best for: Mechanics and DIYers replacing or repairing exhaust manifold fastenings
  • Not ideal for: Uses outside the specified M8 x 1.25 size and temperature range

Supplied hardware matches M8 x 1.25 thread with a total length of 43mm (23+12+8mm). Rated for temperatures from -60 °C to 450 °C and supplied as 16 pieces (eight sets) with Bosal reference 258-950.


High-temperature reliability – with -60 °C to 450 °C rating

Temperature specification of -60 °C to 450 °C indicates the materials are intended to withstand typical exhaust heat cycles. The range covers freezing conditions through heavy heat exposure encountered around manifolds.

Maintains mechanical integrity across extreme temperatures, reducing risk of thread failure and loosening during repeated heating and cooling.

Accurate fitment – with M8 x 1.25 thread and SW13 collar

Bolts use M8 x 1.25 thread pitch and an SW13 collar, with overall length 43mm split as 23+12+8mm. These dimensions match common manifold stud specifications for direct replacement.

Ensures secure engagement with compatible studs, simplifying installation and shortening workshop time.

Complete repair kit – with 16 pieces (eight sets) and Bosal reference

Package content described as 16 pieces arranged as eight sets and includes Bosal No. 258-950 for cross-reference. The grouped set format supports replacing multiple fastenings in one service.

Allows replacement of several fastenings in a single job, reducing trips to suppliers and keeping repair work organised.

✨ The 4 Key Reasons for Young Wolf Exhaust Manifold Nuts Set
  1. Grade 10.9 Construction - High tensile strength for durable exhaust manifold fastening under heat
  2. Wide Temperature Range - Performs from -60 °C to 450 °C without material failure
  3. M8 x 1.25 Thread - Direct compatibility with common manifold studs for accurate fit
  4. Complete 16-piece Kit - Enough fastenings to replace a manifold set in one go
📋 Technical Details at a Glance
  • Category: Exhaust fastening hardware
  • Brand: Young Wolf
  • Product ID: B0DCS66YL8
  • Bolt size / Thread: M8 x 1.25
  • Spanner size: SW13
❓ Frequently Asked Questions

Q: What material grade are the fastenings?

A: Material grade is 10.9, stated as the high-strength specification in the product details.

Q: What temperature range can these fastenings tolerate?

A: Rated for -60 °C to 450 °C, suitable for the thermal conditions encountered around exhaust manifolds.

Q: How many pieces are included and what is the bolt size?

A: The listing refers to 16 pieces supplied as eight sets, with bolt size M8 x 1.25 and overall length 43mm (23+12+8mm).

🏆 Our Verdict

Ideal for mechanics and competent DIY enthusiasts who need durable, heat-resistant manifold fastenings. Grade 10.9 construction and a wide temperature tolerance are the main advantages, with a full kit format and Bosal reference for verification. While no price is stated here, the materials and specification point to a long-lasting set that supports fewer repeat replacements over time.