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*Compatibility Chart
1, You can distinguish specific model of an automobile by VIN(Vehicle Identification Number).
2, VIN(Vehicle Identification Number) consists of total 17 English letters and arabic digits.
3, VIN does not include the letters I (i), O (o), and Q (q) (to avoid confusion with numerals 1 and 0).
Mercedes-Benz R-Class W251
R320 Bluetec Wagon 4-Door 3.0L 2009
R320 CDI Wagon 4-Door 3.0L 2007-2008
R350 4Matic Wagon 4-Door 3.5L 2006-2013
R350 Base Wagon 4-Door 3.5L 2008-2013
R350 Bluetec 4Matic Wagon 4-Door 3.0L 2010-2013
R500 Base Wagon 4-Door 5.0L 2006-2008
R500 Premium Wagon 4-Door 5.0L 2006
R500 Sport Wagon 4-Door 5.0L 2006-2008
R550 4Matic Wagon 4-Door 5.5L 2008
R63 AMG Base Wagon 4-Door 6.3L 2007
*Air Suspension Structure:

15 A251 320 12 04 Compressor Unit
15 A251 320 13 04 Compressor Unit
15 A251 320 20 04 Compressor
15 A251 320 21 04 Compressor Unit
15 A251 320 26 04 Compressor
15 A251 320 27 04 Compressor
20 A251 321 00 40 Bracket
30 A212 320 03 58 Valve Block
30 A251 320 00 58 Valve Block
30 A251 320 01 58 Valve Block
32 A221 328 00 65 Connection Pipe Socket
35 A000 327 00 69 Connector
40 A005 990 25 12 Bolt
60 A211 327 04 30 Rubber Bumper
70 A211 327 05 30 Rubber Bumper
80 A111 990 36 40 Washer
90 A220 993 03 01 Spring
100 A000 992 22 50 Spacer Tube
110 N000000 003477 Nut
120 A251 320 01 69 Air Filter
120 A251 320 02 69 Filter
125 A140 995 01 05 Spring Hose Clamp
127 A211 327 00 11 Retaining Collar
135 N000000 005293 Hexagon Nut
135 N910112 008000 Hexagon Nut
160 A251 320 00 15 Air Cell
160 A251 320 01 15 Pressure Accumulator
300 N000000 003853 Hexalobular Bolt
300 N910105 008008 Hexagon Head Bolt
310 A000 992 34 03 Bushing
530 A251 682 16 04 Insulation
700 A168 545 29 28 Receptacle Housing
700 A168 545 36 28 Pin Bushing Housing
705 A000 540 38 05 Electrical Cable
705 A000 540 41 05 Electrical Cable
800 A046 545 89 28 Plug
810 A015 545 73 26 Contact Spring
820 A210 540 21 81 Clutch
830 A008 545 63 26 Female Contact
*Platform Drive Layout:
Base Model-Rear Wheel Drive Layout
4Matic Model-Four Wheel Drive Layout
*Removal Guideline:
Caution: Damage to the vehicle and air suspension system can be incurred if work is carried out in a manner other than specified in the instructions or in a different sequence.
1.To avoid the possibility of short circuits while working with electric components consult your owner's manual on how to disconnect your battery.
2.Consult your vehicle owner's manual, service manual, or car dealer for the correct jacking points on your vehicle and for additional care, safety and maintenance instructions. Under no circumstances should any work be completed underneath the vehicle if it is not adequately supported, as serious injuries and death can occur.
1.Set steering to straight ahead.
2.Lift vehicle and remove front right wheel.(picture 1)

3.Remove the fasteners and front inner wheel well liner from the vehicle to expose the vehicle's air suspension compressor.(picture 2,3,4,5)




4.Locate and disconnect the two(2)electrical connectors from the compressor.(picture 6,7)


5.Locate and slowly remove the air line from the compressor. Remove the air line fitting from the air hose and discard.(picture 8,9)


6.Locate the larger rubber hose leading to the compressor. Pinch and slide the hose clamp off of the air fitting and remove the air hose.(picture 10,11)


7.Locate and remove the three(3)mounting nuts to remove the compressor from the vehicle.(picture 12,13,14,15)




8.Removal complete.
*Installation Guideline:
1.Installation is in the reverse order of air compressor removal using factory mounting hardware.
*Warning & Notice:
1.When the air compressor being replaced, the matching relay must be replaced according to the corresponding vehicle. If there is something wrong with the relay which leads the compressor to continuous operation without any break, it will burn out the electric motor or other plastic part.
2.When the air compressor being installed, the critical parts such as rubber shock pad and damping spring must be fully fixed on the stand without short installation or missing installation (The air compressor is unequipped with parts). With the anti-vibration parts of short installation or missing installation, a loud noisy instance will happen when the air compressor is working for the sake of resonance.
3.Distribution valve, shock absorber, air tank and tube connector must be checked after air compressor installed to ensure air-tightness. The lifespan of the air compressor will be shortened if the leakage exists.
4.Increased noises while the compressor is running may be caused by a non-functioning compressor mounting. Change the rubbers and springs of the mounting in any case.
5.A porous intake hose often is the cause for a breakdown of the compressor. Change the intake hose and preferably also the filter and noise absorber, because we do not want the compressor to breakdown because of these.
6.Change the relays before installing the compressor even if it seems to still work. This is also a specification by the car manufacturer. Be sure to change the right relays. Relays look similar, that is why there is a risk to change the wrong relays.
7.Be sure to check whether the system is leakproof after repairing. The easiest way to do this is to park the vehicle. Wait for the system to automatically re-adjust if your car has this feature. Then measure the heights from the ground to the lower edge of the fender as exactly as possible and take notes. On the day after measure these heights again and compare them with the ones before. Even a small difference will lead to a damaged compressor and damaged valves in the long run.
*OEM Part Number:
Air Suspension Compressor:
2513201204,2513201304,2513202004
2513202104,2513202704,2513202604
Valve Block:
A2513200158
2513200158
*Package Includes:
Air Suspension Compressor & Valve Block
| Item Specifics | |
|---|---|
| Placement on Vehicle | Left Right Front Rear |
| Included Hardware | Compressor |
| Lubrication Style | Oil-Free |
| Drive Layout | Front Engine RWD & 4WD |
| Platform | W251 |
| Material | Iron Aluminium Alloy Rubber |
| Color | Silver Black |
| Type | Air Suspension Compressor |
| Custom Bundle | No |
| Return Policy | 30 Days Free Return |
| Manufacturer Warranty | 1 Year |
| Quantity | 2PCS |
| Fitment Type | Direct Replacement |
| OE Spec or Performance/Custom | OE Spec |
| Adjustable | Yes |
| Features | Easy to Replace 100% Accuracy of Fit Sealed |
| Brand | amortors |
| Manufacturer Part Number | AM841640M01 |
| Interchange Part Number | 2513201204 2513201304 2513202004 2513202104 |
| OE/OEM Part Number | 2513202704 2513202604 |
| Superseded Part Number | A2513200158 2513200158 |
| Fit for | For Mercedes-Benz W251 R Class |
| Fits 2 | For Mercedes Benz R320 R350 R500 R63 AMG |
| Mounting Style | Screw-On |
| Part Type | Air Suspension Compressor |
| Important Notice | Just like the picture, Professional installation required |
| Kit or Single Part | Kit |

Air Ride Suspension Compressor Pump w/ Valve Block For Mercedes W251 R320 R350
*Compatibility Chart 2, VIN(Vehicle Identification Number) consists of total 17 English letters and arabic digits. 3, VIN does not include the letters I (i), O (o), and Q (q) (to avoid confusion with numerals 1 and 0).
Mercedes-Benz R-Class W251
*Air Suspension Structure:
15 A251 320 12 04 Compressor Unit
*Platform Drive Layout: Base Model-Rear Wheel Drive Layout 4Matic Model-Four Wheel Drive Layout
*Removal Guideline:
*Installation Guideline:
*Warning & Notice: 1.When the air compressor being replaced, the matching relay must be replaced according to the corresponding vehicle. If there is something wrong with the relay which leads the compressor to continuous operation without any break, it will burn out the electric motor or other plastic part. 2.When the air compressor being installed, the critical parts such as rubber shock pad and damping spring must be fully fixed on the stand without short installation or missing installation (The air compressor is unequipped with parts). With the anti-vibration parts of short installation or missing installation, a loud noisy instance will happen when the air compressor is working for the sake of resonance. 3.Distribution valve, shock absorber, air tank and tube connector must be checked after air compressor installed to ensure air-tightness. The lifespan of the air compressor will be shortened if the leakage exists. 4.Increased noises while the compressor is running may be caused by a non-functioning compressor mounting. Change the rubbers and springs of the mounting in any case. 5.A porous intake hose often is the cause for a breakdown of the compressor. Change the intake hose and preferably also the filter and noise absorber, because we do not want the compressor to breakdown because of these. 6.Change the relays before installing the compressor even if it seems to still work. This is also a specification by the car manufacturer. Be sure to change the right relays. Relays look similar, that is why there is a risk to change the wrong relays. 7.Be sure to check whether the system is leakproof after repairing. The easiest way to do this is to park the vehicle. Wait for the system to automatically re-adjust if your car has this feature. Then measure the heights from the ground to the lower edge of the fender as exactly as possible and take notes. On the day after measure these heights again and compare them with the ones before. Even a small difference will lead to a damaged compressor and damaged valves in the long run.
*OEM Part Number: Air Suspension Compressor: 2513201204,2513201304,2513202004
Valve Block: A2513200158
*Package Includes: Air Suspension Compressor & Valve Block
Targeted Disounts Terms
(1).Targeted Discount Terms only apply to auto parts purchased from CARMASUSPENSIONS, which only includes suspension kit, control arm, tie rod end, ball joint, sway bar, stabilizer link, pitman arm, idler arm, steering center link.
(2).If you have reached any targeted discount threshold(s), please contact our customer services after you received all your items.
(3).Targeted Discount will be refunded from buyer's payment, which means CARMASUSPENSIONS won't provide any extra targeted discounts if full refund is issued.
Targeted Shipping Discount
(4).Since our warehouse is located in Los Angeles, California, therefore you are qualified for extra 2% targeted shipping discount off the item sales if shipping address of your order is in California(CA), Washington(WA), Oregon(OR), Nevada(NV). If you have reached this targeted shipping discount threshold, please contact our customer services after you received all your items.
Note: Item sales means your payment for the product(s) only, excluding shipping and handling charges, US internet sales taxes.
(5).We usually need a 1-2 business day as handling time for packaging and shipping scheduling. Estimated delivery dates should be 4-6 business days after your payment is received.
(6).CARMASUSPENSIONS has the final power of interpretation of all the above Targeted Discount Terms and Procedures.
![]() (1).Warehouse is located in Los Angeles, California, where local pickup transaction is temporarily not available.
(2).Shipping services only cover 48 states and Washington DC in US Continental, while most of the time Alaska, Hawaii, Puerto Rico, American Samoa, U.S. Virgin Islands, Northern Marianas, Guam are not deliverable.
(3).USPS PO Box, APO Army Post Office, FPO Fleet Post Office addresses are not available.
(4).Global Shipping Program is temporarily not available due to the reason for package dimensions.
(5).We usually need a 1-2 business day as handling time for packaging and shipping scheduling. Estimated delivery dates should be 4-6 business days after your payment is received.
(6).Your auto parts sometimes might be shipped with two or more separated packages due to weight limitation, please keep patient with no Item Not Received claim or Return request filed until by all of your items are received.
(7).Seller is required to purchase signature confirmation to be protected if a buyer reports an item not received or opens a payment dispute if the order has a total cost (including shipping costs and any taxes) of $750 or more.
Items valued over $15 on eBay that include a warranty or service contract must contain additional details in seller's listing description.
10 Year Warranty Terms and Procedures
(1).The warranty terms only apply to the auto parts purchased from CARMASUSPENSIONS, which only includes suspension kit, control arm, tie rod end, ball joint, sway bar, stabilizer link, pitman arm, idler arm, steering center link.
(2).CARMASUSPENSIONS carries no warranty responsibilities for any auto parts removing fees, installation fees, consulting fees, labor costs, towing charges, rental car reimbursements.
(3).The stated 10 year warranty is limited to only one brand new replacement for each part purchased during 10 year warranty time period.
(4).CARMASUSPENSIONS promises free replacement due to quality defects or item not as described issues within 90 calendar days from the date when buyers receive their items in the situation when buyers are willing to provide convictive proofs or professional diagnose report if required, otherwise CARMASUSPENSIONS has the right to refuse any replacement requests.
(5).CARMASUSPENSIONS promises free replacement due to quality defects or item not as described issues after 90 calendar days from the date when buyers receive their items in the situation when buyers promise to prepay 15% of the original item sales price as postage for replacement, otherwise CARMASUSPENSIONS has the right to refuse any replacement requests.
(6).CARMASUSPENSIONS carries no warranty responsibilities for any replacement due to car accidents, drag racing, unprofessional replacement, road hazard, disassembly.
(7).Anyone who attempts to execute 10 year warranty procedures must be the original purchaser of the item(s), otherwise 10 year warranty terms void immediately.
(8).Anyone who attempts to execute 10 year warranty procedures must provide screenshot of his or her original eBay order details if required, including buyer user name, shipping address, item title, item id, final sales price.
(9).CARMASUSPENSIONS has the final power of interpretation of the above 10 Year Warranty Terms and Procedures.
(1).Most of items support 30 Days Money Back Guarantee.
(2).Refunds will be credited within 2 or 3 business days after returned item(s) is received.
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