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Is OEM or aftermarket better?

Table of Contents

  1. OEM vs aftermarket
  2. How do I find my OEM part number?
  3. Should I choose OEM or aftermarket parts?

When it’s time to purchase car parts, deciding between OEM and aftermarket options depends on personal preference, your pocketbook and specific requirements. Before you buy, it's important to understand what OEM and aftermarket parts are and the differences between them. Here, we’ll explore both options to help you make an informed decision when looking for car parts or accessories for your car.

OEM vs aftermarket

OEM parts, or Original Equipment Manufacturer parts, are known for their high quality since they are manufactured by the same company that produced the original components for the vehicle. These parts are designed with great attention to detail, adhering to the manufacturer's specifications, and therefore have earned a reputation for their superior quality. However, the superior quality of OEM parts comes at a higher cost than their aftermarket counterparts, primarily due to the brand name and compatibility assurance. Although OEM parts are generally available through authorised dealerships, they have limited customisation options since they are created to match factory specifications. Furthermore, OEM parts usually come with a warranty, and using them may help to maintain the warranty on the entire vehicle.

Aftermarket parts come in various qualities, ranging from low to high. Some manufacturers produce components that not only meet but even exceed OEM standards. The biggest advantage of aftermarket parts is that they are generally more budget-friendly and offer a wide array of brands and price options to choose from. You can find these parts in a variety of retailers, ensuring a wide range of options for specific components. However, it's important to review the warranties among aftermarket manufacturers before making a purchase. One notable advantage of aftermarket parts is their flexibility for customisation, allowing vehicle owners to tailor their appearance or performance according to individual preferences. Whether mechanics will recommend aftermarket parts may vary depending on the situation, with some suggesting using them, especially for non-critical areas of the vehicle.

BREMBO COATED DISC LINE 09.B436.51 Brake disc 295x28mm, 5, perforated/vented
Reviews - 51
Parts Details
  • Diameter [mm]: 295
  • Brake Disc Type: perforated / vented
  • Product line: COATED DISC LINE
  • Brake Disc Thickness [mm]: 28
  • Height [mm]: 51
  • Surface: Coated
  • Centering Diameter [mm]: 67
  • Number of Holes: 5
  • Minimum thickness [mm]: 26
  • Tightening Torque [Nm]: 130
  • Machining: High-carbon
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • Drilled: yes
  • BREMBO: Brake disc
  • Item number: 09.B436.51
  • Condition: New
Details
BREMBO Brake disc 295x28mm, 5, perforated/vented
Article number: 09.B436.51
£ 49,09
Price per item
price incl. 20% VAT, excl. delivery costs
-57%
VNE-D160 BILSTEIN B4 OE Replacement 22-131607 Shock absorber Front Axle, Gas Pressure, Twin-Tube, Suspension Strut
Reviews - 37
Parts Details
  • Fitting Position: Front Axle
  • Shock Absorber Type: Gas Pressure
  • Product line: B4 OE Replacement
  • Shock Absorber System: Twin-Tube
  • Shock Absorber Design: Suspension Strut
  • Shock Absorber Mounting Type: Bottom Plate, Top pin
  • Housing diameter in clamping area [mm]: 50
  • BILSTEIN: Shock absorber
  • Item number: 22-131607
  • Condition: New
Details
BILSTEIN Shock absorber Front Axle, Gas Pressure, Twin-Tube, Suspension Strut
Article number: 22-131607
compared to RRP £ 125,63

£ 53,31
Price per item
price incl. 20% VAT, excl. delivery costs
TRW TWIN JGT231T Shock absorber Rear Axle, Gas Pressure, Telescopic Shock Absorber
Reviews - 19
Parts Details
  • Fitting Position: Rear Axle
  • Shock Absorber Type: Gas Pressure
  • Product line: TWIN
  • Shock Absorber Design: Telescopic Shock Absorber
  • Shock Absorber Mounting Type: Top pin, Bottom eye
  • Quantity per axle: 1
  • Observe technical data
  • TRW: Shock absorber
  • Item number: JGT231T
  • Condition: New
Details
TRW Shock absorber Rear Axle, Gas Pressure, Telescopic Shock Absorber
Article number: JGT231T
£ 28,34
Price per item
price incl. 20% VAT, excl. delivery costs
-64%
FEBI BILSTEIN 43954 Brake disc Front Axle, 294x22mm, 4x100, perforated/vented
Reviews - 8
Parts Details
  • Fitting Position: Front Axle
  • Diameter [mm]: 294
  • Brake Disc Type: perforated / vented
  • Brake Disc Thickness [mm]: 22
  • Surface: Coated
  • Centering Diameter [mm]: 64,1
  • Rim Hole Number: 4
  • Bolt Hole Circle Ø [mm]: 100
  • Thickness [mm]: 44
  • Minimum thickness [mm]: 20,4
  • Weight [kg]: 6,38
  • Number of mounting bores: 1
  • Observe service information
  • Drilled: yes
  • FEBI BILSTEIN: Brake disc
  • Item number: 43954
  • Condition: New
Details
FEBI BILSTEIN Brake disc Front Axle, 294x22mm, 4x100, perforated/vented
Article number: 43954
compared to RRP £ 105,98

£ 37,74
Price per item
price incl. 20% VAT, excl. delivery costs
-62%
VNE-5306 BILSTEIN B4 OE Replacement 22-053060 Shock absorber Front Axle Left, Gas Pressure, Twin-Tube, Suspension Strut
Reviews - 9
Parts Details
  • Fitting Position: Front Axle Left
  • Shock Absorber Type: Gas Pressure
  • Product line: B4 OE Replacement
  • Shock Absorber System: Twin-Tube
  • Shock Absorber Design: Suspension Strut
  • Shock Absorber Mounting Type: Top pin, Bottom Clamp
  • paired article number: 22-053077
  • BILSTEIN: Shock absorber
  • Item number: 22-053060
  • Condition: New
Details
BILSTEIN Shock absorber Front Axle Left, Gas Pressure, Twin-Tube, Suspension Strut
Article number: 22-053060
compared to RRP £ 137,14

£ 51,75
Price per item
price incl. 20% VAT, excl. delivery costs

How do I find my OEM part number?

First of all, take a look at the component itself. You may be able to find the number there if the part is not too badly damaged. If that doesn’t work, visit the official website of your vehicle's manufacturer. Many manufacturers and retailers provide online parts catalogues, for example, a VW parts catalogue or parts decoders where you can input your vehicle's VIN to find the OEM part numbers for specific components.

Is OEM or aftermarket better?

Should I choose OEM or aftermarket parts?

Deciding between OEM (Original Equipment Manufacturer) and aftermarket parts is a complex process that requires careful consideration of multiple factors. OEM parts are highly regulated and consistently high-quality but can be more expensive and come with specific warranty benefits. While aftermarket parts offer a wider range of options with varying quality levels and prices, along with customization choices to meet individual needs.

Depending on your priorities, like brand loyalty, cost-effectiveness, or specific modifications, you have to evaluate these factors to make an informed decision that suits your specific automotive needs, such as when you are purchasing wiper blades.
Ultimately, both OEM and aftermarket parts play a significant role in the automotive market with a diverse range of options to maintain and upgrade your vehicle.

Top products related to this topic:

AUTODOC Bestsellers: parts at a good price

GH GH-354710C03 Suspension Strut Front Axle, Right, Left, Front Axle Right, Front Axle Left
Reviews - 2
Parts Details
  • Fitting Position: Front Axle, Right, Left, Front Axle Right, Front Axle Left
  • Shock Absorber Type: Gas Pressure
  • Shock Absorber System: Twin-Tube
  • Shock Absorber Design: Suspension Strut, Damper Module
  • Mounting Type: Pre-assembled
  • Replace in pairs only
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • GH: Suspension Strut
  • Item number: GH-354710C03
  • Condition: New
Details
GH Suspension Strut Front Axle, Right, Left, Front Axle Right, Front Axle Left
Article number: GH-354710C03
£ 114,24
Price per item
price incl. 20% VAT, excl. delivery costs
BP041 BOSCH 0 986 424 098 Brake pad set Low-Metallic
Reviews - 11
Parts Details
  • Brake System: Bosch
  • Material: Low-Metallic
  • Thickness [mm]: 18
  • Quantity Unit: Axle Set
  • Height [mm]: 47,4
  • Width [mm]: 109,2
  • WVA Number: 20775
  • Test Mark: ECE-R90
  • Article number of recommended accessories: 1987474106
  • Observe technical data
  • BOSCH: Brake pad set
  • Item number: 0 986 424 098
  • Our price: £ 15,28
  • Condition: New
Details
BOSCH Brake pad set Low-Metallic
Article number: 0 986 424 098
£ 15,28
price incl. 20% VAT, excl. delivery costs
-54%
SACHS 314 717 Shock absorber Gas Pressure, Twin-Tube, Suspension Strut
Reviews - 36
Parts Details
  • Shock Absorber Type: Gas Pressure
  • Shock Absorber System: Twin-Tube
  • Shock Absorber Design: Suspension Strut
  • Shock Absorber Mounting Type: Top pin
  • Parameter: SFE32 / 22X150A
  • SACHS: Shock absorber
  • Item number: 314 717
  • Condition: New
Details
SACHS Shock absorber Gas Pressure, Twin-Tube, Suspension Strut
Article number: 314 717
compared to RRP £ 119,65

£ 54,19
Price per item
price incl. 20% VAT, excl. delivery costs
24008 BREMBO P 50 051 Brake pad set incl. wear warning contact
Reviews - 50
Parts Details
  • Brake System: Bosch
  • Wear Warning Contact: incl. wear warning contact
  • Supplementary Article / Supplementary Info: with accessories
  • Thickness [mm]: 18
  • Quantity Unit: Axle Set
  • Number of wear indicators [per axle]: 2
  • Height [mm]: 50
  • Width [mm]: 102
  • WVA Number: 24008
  • Supplementary Article / Supplementary Info Info 2: with brake caliper screws, with anti-squeak plate
  • Warning Contact Length [mm]: 95
  • BREMBO: Brake pad set
  • Item number: P 50 051
  • Our price: £ 24,07
  • Condition: New
Details
BREMBO Brake pad set incl. wear warning contact
Article number: P 50 051
£ 24,07
price incl. 20% VAT, excl. delivery costs
GH GH-354710C04 Suspension Strut Front Axle, Right, Left, Front Axle Right, Front Axle Left
Reviews - 2
Parts Details
  • Fitting Position: Front Axle, Right, Left, Front Axle Right, Front Axle Left
  • Shock Absorber Type: Gas Pressure
  • Shock Absorber System: Twin-Tube
  • Shock Absorber Design: Suspension Strut, Damper Module
  • Mounting Type: Pre-assembled
  • Replace in pairs only
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • GH: Suspension Strut
  • Item number: GH-354710C04
  • Condition: New
Details
GH Suspension Strut Front Axle, Right, Left, Front Axle Right, Front Axle Left
Article number: GH-354710C04
£ 111,07
Price per item
price incl. 20% VAT, excl. delivery costs
BREMBO COATED DISC LINE 09.C246.11 Brake disc 324x22mm, 5, internally vented, slotted/perforated
Reviews - 5
Parts Details
  • Diameter [mm]: 324
  • Brake Disc Type: internally vented, slotted / perforated
  • Product line: COATED DISC LINE
  • Brake Disc Thickness [mm]: 22
  • Height [mm]: 67
  • Surface: Coated
  • Centering Diameter [mm]: 75
  • Number of Holes: 5
  • Minimum thickness [mm]: 20,4
  • Machining: High-carbon
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • Drilled: yes
  • BREMBO: Brake disc
  • Item number: 09.C246.11
  • Condition: New
Details
BREMBO Brake disc 324x22mm, 5, internally vented, slotted/perforated
Article number: 09.C246.11
£ 61,02
Price per item
price incl. 20% VAT, excl. delivery costs
BREMBO TWO-PIECE FLOATING DISCS LINE 09.9313.33 Brake disc 390x36mm, 5, internally vented, slotted/perforated, two-part brake disc, Aluminium Brake Disc Hub
Parts Details
  • Diameter [mm]: 390
  • Brake Disc Type: internally vented, slotted / perforated, two-part brake disc, Aluminium Brake Disc Hub
  • Product line: TWO-PIECE FLOATING DISCS LINE
  • Brake Disc Thickness [mm]: 36
  • Height [mm]: 65
  • Surface: Coated
  • Centering Diameter [mm]: 67
  • Number of Holes: 5
  • Minimum thickness [mm]: 33
  • Machining: High-carbon
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • Drilled: yes
  • BREMBO: Brake disc
  • Item number: 09.9313.33
  • Condition: New
Details
BREMBO Brake disc 390x36mm, 5, internally vented, slotted/perforated, two-part brake disc, Aluminium Brake Disc Hub
Article number: 09.9313.33
£ 421,16
Price per item
price incl. 20% VAT, free delivery
-50%
LD2779 ATE Ceramic 13.0470-2779.2 Brake pad set prepared for wear warning indicator, excl. wear warning contact
Reviews - 34
Parts Details
  • Brake System: Lucas / TRW
  • Wear Warning Contact: prepared for wear warning indicator, excl. wear warning contact
  • Thickness [mm]: 19,3
  • Product line: Ceramic
  • Quantity Unit: Axle Set
  • Height [mm]: 71,6
  • Width [mm]: 144,0
  • Test Mark: E1 90R-02A0258 / 0015
  • Supplementary Article / Supplementary Info Info 2: with brake caliper screws
  • MAPP code available
  • Article number of recommended accessories: 24.8190-0067.2
  • Number of bolts / screws: 4
  • Observe dimensions
  • Permissible up to vehicle capacity [kW]: 225
  • ATE: Brake pad set
  • Item number: 13.0470-2779.2
  • Our price: £ 62,04
  • Condition: New
Details
ATE Brake pad set prepared for wear warning indicator, excl. wear warning contact
Article number: 13.0470-2779.2
compared to RRP £ 126,44

£ 62,04
price incl. 20% VAT, excl. delivery costs
BREMBO TWO-PIECE DISCS LINE 09.C400.13 Brake disc 345x24mm, 5, internally vented, slotted/perforated, two-part brake disc, Aluminium Brake Disc Hub
Reviews - 14
Parts Details
  • Diameter [mm]: 345
  • Brake Disc Type: internally vented, slotted / perforated, two-part brake disc, Aluminium Brake Disc Hub
  • Product line: TWO-PIECE DISCS LINE
  • Brake Disc Thickness [mm]: 24
  • Height [mm]: 66
  • Surface: Coated
  • Centering Diameter [mm]: 75
  • Number of Holes: 5
  • Minimum thickness [mm]: 22,4
  • Machining: High-carbon
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • Drilled: yes
  • BREMBO: Brake disc
  • Item number: 09.C400.13
  • Condition: New
Details
BREMBO Brake disc 345x24mm, 5, internally vented, slotted/perforated, two-part brake disc, Aluminium Brake Disc Hub
Article number: 09.C400.13
£ 136,90
Price per item
price incl. 20% VAT, free delivery
AM 33 H BOSCH 3 397 016 507 Rear wiper blade 330 mm, Flat wiper blade
Reviews - 20
Parts Details
  • Length [mm]: 330
  • Wiper blade type: Flat wiper blade
  • BOSCH: Rear wiper blade
  • Item number: 3 397 016 507
  • Our price: £ 10,83
  • Condition: New
Details
BOSCH Rear wiper blade 330 mm, Flat wiper blade
Article number: 3 397 016 507
£ 10,83
price incl. 20% VAT, excl. delivery costs
-55%
VNE-E426 BILSTEIN B4 OE Replacement 22-144263 Shock absorber Front Axle Right, Gas Pressure, Twin-Tube, Suspension Strut
Reviews - 12
Parts Details
  • Fitting Position: Front Axle Right
  • Shock Absorber Type: Gas Pressure
  • Product line: B4 OE Replacement
  • Shock Absorber System: Twin-Tube
  • Shock Absorber Design: Suspension Strut
  • Shock Absorber Mounting Type: Bottom Plate, Top pin
  • paired article number: 22-144249
  • BILSTEIN: Shock absorber
  • Item number: 22-144263
  • Condition: New
Details
BILSTEIN Shock absorber Front Axle Right, Gas Pressure, Twin-Tube, Suspension Strut
Article number: 22-144263
compared to RRP £ 125,63

£ 56,35
Price per item
price incl. 20% VAT, excl. delivery costs
BREMBO COATED DISC LINE 09.A819.11 Brake disc 360x36mm, 5, perforated/vented
Reviews - 4
Parts Details
  • Diameter [mm]: 360
  • Brake Disc Type: perforated / vented
  • Product line: COATED DISC LINE
  • Brake Disc Thickness [mm]: 36
  • Height [mm]: 65
  • Surface: Coated
  • Centering Diameter [mm]: 67
  • Number of Holes: 5
  • Minimum thickness [mm]: 34
  • Tightening Torque [Nm]: 130
  • Machining: High-carbon
  • Supplementary Article / Supplementary Info Info 2: with bolts / screws
  • Drilled: yes
  • BREMBO: Brake disc
  • Item number: 09.A819.11
  • Condition: New
Details
BREMBO Brake disc 360x36mm, 5, perforated/vented
Article number: 09.A819.11
£ 98,95
Price per item
price incl. 20% VAT, excl. delivery costs
-73%
TRW TWIN JGT290T Shock absorber Rear Axle, Gas Pressure, Telescopic Shock Absorber
Reviews - 3
Parts Details
  • Fitting Position: Rear Axle
  • Shock Absorber Type: Gas Pressure
  • Product line: TWIN
  • Shock Absorber Design: Telescopic Shock Absorber
  • Shock Absorber Mounting Type: Top eye, Bottom eye
  • Quantity per axle: 1
  • Observe technical data
  • TRW: Shock absorber
  • Item number: JGT290T
  • Condition: New
Details
TRW Shock absorber Rear Axle, Gas Pressure, Telescopic Shock Absorber
Article number: JGT290T
compared to RRP £ 85,34

£ 22,71
Price per item
price incl. 20% VAT, excl. delivery costs
AM 40 H BOSCH 3 397 016 509 Rear wiper blade 400 mm, Flat wiper blade
Reviews - 19
Parts Details
  • Length [mm]: 400
  • Wiper blade type: Flat wiper blade
  • BOSCH: Rear wiper blade
  • Item number: 3 397 016 509
  • Our price: £ 9,58
  • Condition: New
Details
BOSCH Rear wiper blade 400 mm, Flat wiper blade
Article number: 3 397 016 509
£ 9,58
price incl. 20% VAT, excl. delivery costs
MONROE C2516S Shock absorber Gas Pressure, Electronically adjustable shock strength, Suspension Strut
Reviews - 43
Parts Details
  • Shock Absorber Type: Gas Pressure
  • Shock Absorber System: Electronically adjustable shock strength
  • Shock Absorber Design: Suspension Strut
  • Shock Absorber Mounting Type: Top pin, Bottom Clamp
  • Weight [kg]: 5,568
  • Operating Mode: Electronic
  • Packaging length [cm]: 59,1
  • Packaging width [cm]: 20,7
  • Packaging height [cm]: 21,2
  • MONROE: Shock absorber
  • Item number: C2516S
  • Condition: New
Details
MONROE Shock absorber Gas Pressure, Electronically adjustable shock strength, Suspension Strut
Article number: C2516S
£ 121,51
Price per item
price incl. 20% VAT, excl. delivery costs

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