gearbox code ??

[GiveMeABreak]

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[RonWaters2040]

I want to know if I can replace 20GR03 with 20GY03.
If the two are different, may I know the gear ratios and whether the mounting are the same.
My VIN is VF3**************[VIN obfuscated, can be read by forum staff]
2008 Peugeot 308 2.0 HDI XSE Hatchback

[GiveMeABreak]

The 20GR03 is for DW10BTED4 engines (which is what you have ) and the 20GY03 is for the later DW10CTED4 engines.

Your Engine Code (DW10BTED4) = RHR
DW10CTED4 Code = RHH

There may be other considerations, such as knock-on effect to ESP system.

Gearbox ratios

Stepping of the gearbox	(1st gear)	(2nd gear)	(3rd gear)	(4th gear)	(5th gear)	(6th)	Reverse gear
AM6C	4,15	2,37	1,56	1,16	0,86	0,69	3,39

Speeds per 1000 rpm (Kph)

Engine	RHR	RHH	RHH
Final drive ratio	15/53	15/53	15/53
Changing down ratio	51/50	51/50	51/50
Tyre	205/55 R16	225/45 R17	215/55 R16
Rolling circumference	1,924	1,934	1,959
(1st gear)	8,03	8,08	8,18
(2nd gear)	14,06	14,132	14,315
(3rd gear)	21,42	21,54	21,813
(4th gear)	28,86	29,012	29,387
(5th gear)	38,78	38,98	39,483
(6th)	48,60	48,85	49,483
Reverse gear	9,82	9,87	9,998

[ibog]

DW10TD RHY 2.0 90
Citroen C5 2003

could someone help me find a gearbox number and ratios please?

[ibog]

for Citroen C5 :