Rear View Mirror Assembly
Full BOM Should Cost
Automotive OEM · 5-part assembly · 1,50,000 units/year · India manufacturing
Product
Rear View Mirror Assy
Total Cost
$0.96 / unit
Annual Volume
1,50,000 units
Parts Analysed
5 components
Region
India (Ex Works)
Assembly Cost Breakdown
5 parts · 5 processes · $0.96 total
| Part | Process | Material ($) | Process ($) | OH ($) | Total ($) | Share |
|---|---|---|---|---|---|---|
Mirror Cover RVMSA2CP1 | Injection Moulding | 0.11 | 0.02 | 0.02 | $0.14 | 15% |
Mirror Arm RVMSA1CP1 | Hot Forging + CNC + Bending | 0.10 | 0.23 | 0.04 | $0.36 | 38% |
M10 Mirror Adapter RVMSA1CP4 | Cold Forming + CNC Turning | 0.06 | 0.18 | 0.03 | $0.27 | 29% |
Rubber Boot RVMSA1CP2 | Compression Moulding | 0.04 | 0.01 | 0.01 | $0.06 | 6% |
Mirror Glass RVMSA2CP3 | CNC Laser Cutting | 0.07 | 0.04 | 0.01 | $0.12 | 13% |
| Total Assembly Cost | $0.96 | 100% | ||||
Cost Driver - Per Part
Material vs Process vs Overhead
Mirror Cover
Injection Moulding
$0.14
Mirror Arm
Hot Forging + CNC + Bending
$0.36
M10 Mirror Adapter
Cold Forming + CNC Turning
$0.27
Rubber Boot
Compression Moulding
$0.06
Mirror Glass
CNC Laser Cutting
$0.12
Key Insight
Process cost dominates metal parts; material dominates moulded parts
The Mirror Arm and Adapter together account for $0.64 - 67% of total assembly cost - driven by multi-step machining, induction heating, and heat treatment. Plastic and rubber components are material-cost-led at 77–78%.
67%
Metal parts share
$0.96
Assembly total
Part-Level Process Deep Dive
Manufacturing process intelligence per component
Most Complex Component
Mirror Arm - 9 Manufacturing Operations
Hot forging · CNC turning · Thread rolling · Bending · Age hardening · Phosphating · Powder coating
$0.36
QC
XRF Analysis
$0.005
Cutting
Bandsaw Cutting
$0.004
Heating
Induction Heating
$0.065
Forming
Hot Forging
$0.042
Machining
CNC Turning
$0.066
Forming
Bending
$0.008
HT
Age Hardening
$0.031
Finish
Phosphating
$0.006
Finish
Powder Coating
$0.010
Precision Turned Component
M10 Mirror Adapter - Cold Forming + 5-Operation CNC
Wire cold heading · Zone annealing · Turning · Grooving · Threading · Drilling · Tapping · Black oxide
$0.27
| CNC Operation | Details | Time (s) |
|---|---|---|
| Turning | Ø13.65 → 10.00, L=14 mm, 35 m/min | 17.86 |
| Grooving | Ø13.65 → 13.15, L=1 mm | 0.81 |
| Threading | Ø10.00 → 8.50, L=13.7 mm, 20 m/min | 19.05 |
| Drilling | Ø8.50, Depth 30 mm, 35 m/min | 14.13 |
| Tapping | M10, Depth 30 mm, 25 m/min | 18.99 |
| Total Cycle Time | 90.84 | |
Injection Moulded
Mirror Cover
PP+20% GF · 95 Ton · 2 cavities · 25.3 s cycle
Compression Moulded + Laser Cut
Rubber Boot + Mirror Glass
EPDM Shore 40D · Silver mirror glass · India
Rubber Boot - $0.058
Mirror Glass - $0.12
Process Coverage
5 distinct manufacturing technologies in one assembly
Injection Moulding
Mirror Cover
PP+20% GF, 2-cavity cold runner, H13 tool
Hot Forging + CNC
Mirror Arm
9 operations, induction heating, thread rolling
Cold Forming + CNC
M10 Adapter
Wire heading, 5-op CNC, black oxide finish
Compression Moulding
Rubber Boot
EPDM, 8-cavity, 41 s cycle, 30 Ton press
Laser Cutting
Mirror Glass
Silver glass, 3 m/min, 196 parts/sheet
Emithran Analysis
What this should cost report enables
Process-Level Cost Visibility
Every operation - heating, forging, machining, plating - broken down to $/part. No supplier black-box pricing.
Material Grade Validation
PP+20%GF, EPDM Shore 40D, Silver Mirror Glass - density, price, scrap recovery and utilisation modelled for each grade.
Tooling ROI Clarity
~$15,100 injection mould, ~$35,600 forging tooling programme - amortised against 5-year volume and shot life for accurate piece-price impact.
For Enquiry
Want this level of should cost intelligence for your assembly?
Emithran models every operation - material, process, overhead - giving you the cost data to negotiate, design, and source smarter.
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