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Street Proven Fab Gen 5 LT L83 L86 Starter Bolt Kit

$29.95 $19.95

SKU: 719501

Set of Starter Bolts for GM Gen 5 LT Series Engines

(Set of 2)

TORQUE SPECS: 37 ft-lb

Street Proven Fab now offers American made and affordable black-phosphate 10.9 bolt kits for most LT applications. This kit is compatible with all 2 bolt Gen 5 LT car and truck starters. SPF starter bolt kits use black-phosphate 10.9 grade bolts that are corrosion resistant, have a tensile strength of 150,000 psi and meet ISO 898-1 standards. These Class 10.9 steel bolts are made for high-stress applications. They are at least 25% stronger than medium-strength steel bolts. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Head height includes the flange. Length is measured from under the flange.


2x M10 1.5 120mm Bolts (Black-Phosphate 10.9 Bolts) 


M10 1.5 120mm 

Head Type Hex
Screw Features Flanged
Drive Style External Hex
System of Measurement Metric
Thread Direction Right Hand
Thread Size M10
Thread Pitch 1.5 mm
Thread Type Metric
Thread Fit Class 6g
Length 120 mm
Threading Partially Threaded
Min. Thread Length 26 mm
Thread Spacing Coarse
Head, mm
Width 15
Height 9.2
Flange Diameter 22.3 mm
Fastener Strength Grade/Class Class 10.9
Material Black-Phosphate Steel
Tensile Strength 150,000 psi
Hardness Rockwell C32
Specifications Met ISO 898-1, DIN 6921
RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/16/2020, 205 SVHC) Compliant



WARNING - This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.