M20 Fastener Guide

Every fastener in the BimmerHeads M20 Fastener Kit is listed here by location — the same kit we use on every M20 build we do in-house. Five packs, one per engine section. Open the right pack, install with confidence.

Pack #1: Oil Pan

  • Oil pan bolt with integrated washer — M6 x 20mm — Qty: 25
  • Oil level sender flanged nut — M6 — Qty: 2

Pack #2: Block

  • Engine mount arm bolt — M8 x 16mm (10.9) — Qty: 8
  • Engine mount arm bolt wave washer — M8 — Qty: 8
  • Engine mount nut — M10 — Qty: 4
  • Engine mount wave washer — M10 — Qty: 4
  • Distributor plug hold down bolt — M8 x 30mm — Qty: 1
  • Distributor plug hold down bolt flat washer — M8 — Qty: 1
  • Alternator bracket bolt (short) — M8 x 30mm — Qty: 2
  • Alternator bracket bolt (long) — M8 x 60mm — Qty: 1
  • Alternator bracket bolt wave washer — M8 — Qty: 3
  • A/C bracket bolt (socket head) — M8 x 25mm — Qty: 4
  • A/C bracket bolt wave washer — M8 — Qty: 4
  • Crank sensor bracket bolt — M8 x 25mm — Qty: 2
  • Crank sensor bracket bolt wave washer — M8 — Qty: 2
  • Crank sensor bolt (socket head) — M6 x 12mm — Qty: 1
  • Crank sensor bolt wave washer — M6 — Qty: 1
  • Crank pulley bolt — M8 x 16mm (10.9) — Qty: 6
  • Crank pulley bolt wave washer — M8 — Qty: 6

Pack #3: Covers

  • Inner lower timing cover bolt (small) — M6 x 18mm — Qty: 4
  • Inner lower timing cover bolt (small) wave washer — M6 — Qty: 4
  • Inner lower timing cover bolt (large) — M8 x 22mm — Qty: 2
  • Inner lower timing cover bolt (large) wave washer — M8 — Qty: 2
  • Camshaft seal flange bolt — M6 x 18mm — Qty: 2
  • Camshaft seal flange bolt wave washer — M6 — Qty: 2
  • Timing belt tensioner bolt — M8 x 20mm — Qty: 1
  • Timing belt tensioner bolt flat washer — M8 — Qty: 1
  • Timing belt tensioner stud — OE BMW — Qty: 1
  • Outer lower timing cover bolt — M6 x 22mm — Qty: 1
  • Outer lower timing cover bolt wave washer — M6 — Qty: 1
  • Upper timing cover bolt (small) — M6 x 60mm — Qty: 1
  • Upper timing cover bolt (small) flat washer — M6 — Qty: 1
  • Upper timing cover bolt (small) wave washer — M6 — Qty: 1
  • Upper timing cover bolt (large) — M8 x 25mm — Qty: 1
  • Upper timing cover bolt (large) flat washer — M8 — Qty: 1
  • Alternator bracket to timing cover flanged nut — M8 — Qty: 1
  • Rear main seal cover bolt (small) — M6 x 25mm — Qty: 4
  • Rear main seal cover bolt (small) wave washer — M6 — Qty: 4
  • Rear main seal cover bolt (large) — M8 x 25mm — Qty: 2
  • Rear main seal cover bolt (large) wave washer — M8 — Qty: 2
  • Valve cover flanged nut — M6 — Qty: 8
  • Valve cover bracket bolt — M6 x 16mm — Qty: 2
  • Valve cover bracket bolt flat washer — M6 — Qty: 2

Pack #4: Intake

  • Intake manifold nut — M8 — Qty: 12
  • Intake manifold wave washer — M8 — Qty: 12
  • Intake manifold wiring bracket flanged nut — M6 — Qty: 2
  • Diagnostic port bracket nut — M8 — Qty: 1
  • Fuel rail bolt — M6 x 12mm — Qty: 4
  • Throttle body flanged nut — M6 — Qty: 4
  • Throttle cable bracket bolt — M6 x 16mm — Qty: 3
  • Vacuum plate bolt — M6 x 30mm — Qty: 3
  • Vacuum plate bolt flat washer — M6 — Qty: 3
  • Dipstick tube bolt with integrated washer — M6 x 12mm — Qty: 1
  • Dipstick tube flanged nut — M6 — Qty: 1

Pack #5: Cooling

  • Water pump bolt — M8 x 20mm — Qty: 3
  • Water pump bolt wave washer — M8 — Qty: 3
  • Water pump pulley bolt — M6 x 10mm — Qty: 4
  • Water pump pulley bolt flat washer — M6 — Qty: 4
  • Rear water neck bolt — M6 x 35mm — Qty: 2
  • Rear water neck bolt wave washer — M6 — Qty: 2
  • Thermostat housing nut — M8 — Qty: 2
  • Thermostat housing wave washer — M8 — Qty: 2
  • Thermostat cover bolt — M6 x 25mm — Qty: 3
  • Thermostat cover bolt wave washer — M6 — Qty: 3
  • Front coolant pipe bolt (late model) — M6 x 16mm — Qty: 2
  • Front coolant pipe bolt wave washer — M6 — Qty: 2

This guide was put together by the same team that spec’d, sourced, and packaged every fastener in this kit. If something’s missing or doesn’t match what’s here, contact us — we stand behind every kit we ship.