The LS-8707 (ATC-8707) thread insert repairs stripped or damaged head bolt holes in Detroit Diesel 60 Series (DD13, DD15, DD16) engine blocks—M16 × 2.00 internal × 13/16"-16 external threads, 2.50" length—restores strong, aligned bolt engagement without block replacement or major machining. The High Costs of Ignoring Stripped Head Bolt Holes in Detroit 60 Series Engines Stripped M16 head bolt threads force expensive solutions: oversized bolts (risky alignment), heli-coil attempts (often fail under torque), extensive deck machining, or complete block replacement—resulting in head lift, gasket leaks, or full engine downtime. Heli-coil / thread chase failure – $700–$2,800 rework Head gasket / alignment failure – $2,500–$7,000 repeat service Cylinder head removal & rework – $4,000–$10,000 labor & parts Engine block replacement – $12,000–$25,000+ short/long block Truck downtime & lost revenue – 8–35 days ($800–$3,000/day fleet loss) Rework & warranty claims — Extra 50–130 hours at $150–$350/hr What is the LS-8707 Thread Insert? The LS-8707 / ATC-8707 Detroit Diesel 60 Series Bolt Hole Thread Insert is a high-strength repair insert with M16 × 2.00 internal threads and 13/16"-16 external threads, 2.50" overall length—designed specifically to salvage stripped head bolt holes in DD13, DD15, DD16 engine blocks. Ideal for Detroit Diesel rebuilders, heavy-duty shops, and fleet maintenance, it provides deep engagement, accepts standard M16 bolts, and is compatible with M20111-DD fixtures & common thread repair kits (Kent-Moore, Porta-Tool, Detroit)—turning potential $12K–$25K losses into profitable repairs. Complete Insert Specifications & Detroit 60 Compatibility Application: Stripped head bolt hole repair Compatible Engines: Detroit Diesel 60 Series (DD13, DD15, DD16) Part Number: LS-8707 / ATC-8707 / PT-8707 Thread Specs: Internal M16 × 2.00, External 13/16"-16 TPI Overall Length: 2.50" Compatibility: Works with M20111-DD fixture & standard DD60 thread repair kits Pricing Tiers: 1–9 $56.00 | 10–24 $50.40 | 25–49 $46.48 | 50–99 $38.08 | 100+ $32.48 Shipping Weight: 1.00 lb Professional Features & Engine Block Benefits ✓ Deep 2.50" Engagement Strong hold in DD60 head bolt holes ✓ Metric / Imperial Dual Thread M16-2.00 internal accepts OEM bolts ✓ Block-Saving Repair Avoids $12K–$25K replacement ✓ Fixture Compatibility Works with M20111-DD alignment tools ✓ High-Strength Material Withstands high combustion torque ✓ Volume Discounts As low as $32.48 (100+) Economic Impact: LS-8707 ROI for Shops Scenario Cost Impact LS-8707 insert repair $56.00 (single) – $32.48 (bulk) Heli-coil / thread chase failure $700–$2,800 Head & gasket rework $4,000–$10,000 Engine block replacement $12,000–$25,000 Total stripped hole cost $16,700–$37,800 per engine LS-8707 ROI (first repair) 298–675X return on investment When Detroit 60 Techs & Rebuilders Choose LS-8707 Detroit Diesel 60 Series (DD13/DD15/DD16) stripped head bolt holes DD60 engine block salvage & overhaul Detroit 60 head gasket & top-end repair Heavy-duty diesel rebuild facilities Fleet maintenance on DD60-powered trucks M16 head bolt thread restoration jobs Cost-effective block thread repair Repair Detroit 60 Head Bolt Holes Fast. OEM-Strength Threads. Save Blocks. Maximize Rebuild Profits. Get LS-8707 – $56.00 Why Detroit 60 Specialists Trust LS-8707 Detroit 60 Series rebuilders rely on the LS-8707 for its deep 2.50" engagement, precise M16 × 2.00 internal threads, and proven ability to salvage blocks that would otherwise cost $16K–$38K to replace. It restores factory-level strength and keeps engines profitable. From long-haul fleets to reman shops, this insert turns damaged blocks into high-margin repairs.